The journey to Microservices can be very challenging. Identifying proper boundaries, integrating services, and handling infrastructure and operational complexities that Microservices come with can be very overwhelming. How not to loose sight and to cope with those challenges and still delivering user and business value? One approach could be to focus on that part of your business that gives most competitive advantage - your core domain - and outsource undifferentiating commodities to utility suppliers. Domain Driven Design combined with Wardley Maps can help us to understand the problem domain and to focus on the core domain. In this talk Susanne will show how Domain Driven Design and Wardley Maps can be used together to visualise how a value chain can evolve during a Microservices journey and keeping focus on your core domain.

1. Preparing For a Future
Microservices Journey
Using Wardley Maps
Susanne Kaiser
Independent Tech Consultant
@suksr
DDD &

2. Source: https://www.marketresearchfuture.com/reports/microservices-architecture-market-3149
Microservices Architecture Market
Key Trends
Loose Coupling
Deployment
Domain Driven Design
2016 2017 2018 2019 2020 2021 2022 2023
USD ~33 Billion
MarketSize(USDBillion)
CAGR ~17%

3. Source: https://www.infoq.com/articles/architecture-trends-2019/

4. Source: https://www.infoq.com/articles/architecture-trends-2019/

5. Source: https://en.wikipedia.org/wiki/Hype_cycle#/media/File:Gartner_Hype_Cycle.svg
Microservices ?
Gartner Hype Cycle

6. @suksr

7. @suksr
High cohesion
within a service
Loose coupling between services

8. @suksr
High cohesion
within a service
Loose coupling between services

9. @suksr
Data Store

10. Data Store
@suksr
Config./Setup
Maintenance
Integration

11. Hardware
O/S
Virtualization
Container
Runtime
@suksr

12. API
Hardware
O/S
Virtualization
Container
Runtime
@suksr

13. API
Hardware
O/S
Virtualization
Container
Runtime
@suksr
APIAPI
Integration

14. API
Hardware
O/S
Virtualization
Container
Runtime
@suksr
APIAPI
Security

15. API
APIAPIService Discovery
1. Register
3. Connect
2. Discover
Hardware
O/S
Virtualization
Container
Runtime
@suksr

16. API
APIAPIService Discovery
Load-Balancer
Hardware
O/S
Virtualization
Container
Runtime
@suksr

17. API
APIAPIService Discovery
API
Timeout-Handling
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer

18. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer

19. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Idempotency
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer

20. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

21. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
Heads
Circuit Breaker
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

22. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Circuit Breaker
Message Broker
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

23. API
APIAPIService Discovery
Load-Balancer
API
Timeout-Handling
Retries
Bulk-
heads Circuit Breaker
Message Broker
API-Gateway
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Idempotency

24. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Message Broker
API-Gateway
Circuit Breaker
Config-Mngmt.
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

25. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Message Broker
API-Gateway
Circuit Breaker
Config-Mngmt.
Monitoring
Log Aggreation
Metrics
Distributed
Tracing
Health ChecksHardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

26. API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Message Broker
API-Gateway
Circuit Breaker
Config-Mngmt.
Monitoring
Log Aggreation
Metrics
Distributed
Tracing
Health Checks
SCM
Checkout TestBuild
CI/CD Pipeline
Deploy
Hardware
O/S
Virtualization
Container
Runtime
@suksr
Load-Balancer
Idempotency

27. Recovery
API
APIAPIService Discovery
API
Timeout-Handling
Retries
Bulk-
heads
Message Broker
API-Gateway
Circuit Breaker
Config-Mngmt.
Monitoring
Log Aggreation
Metrics
Distributed
Tracing
Health Checks
SCM
Checkout TestBuild
CI/CD Pipeline
Deploy
Hardware
O/S
Virtualization
Container
Runtime
Backup
@suksr
Load-Balancer
Scaling
Idempotency

28. µService
@suksr

29. Hardware
Data Store
API
API-Gateway Service Discovery Load-Balancer
Message Broker
Timeout-Handling Retries Idempotency Bulkheads Circuit Breaker
Config-Mngmt.
Monitoring Log Aggreation Metrics Distributed
Tracing
Health Checks
SCM
O/SVirtualization Container Runtime
Checkout TestBuild
CI/CD Pipeline
Deploy
µService
Backup Recovery
@suksr
Scaling
Maintenance
Integration
Security

30. Domain Driven Design (DDD) – Terminology
Strategic Design
Tactical Design
Bounded Context
Ubiquitous Language
Core Subdomain
Supporting Subdomain
Generic Subdomain
Problem Space
Solution Space
Context Maps
Anti-Corruption Layer
Shared Kernel
Open Host Service
Separate Ways
Partnership
Customer-Supplier
Conformist
Domain Model
Entity
Value Object
Aggregate
Repository
Factory
Application Service
Domain Service
Domain Event
@suksr

31. Hardware Data Store
API
API-Gateway Service Discovery Load-Balancer
Message Broker
Timeout-Handling Retries Idempotency Bulkheads Circuit Breaker
Config-Mngmt.
Monitoring Log Aggreation Metrics Distributed
Tracing
Health Checks
SCM
O/SVirtualization Container Runtime
Checkout TestBuild
CI/CD Pipeline
Deploy
µService
Backup Recovery
Scaling
Maintenance
Integration
Security
Strategic Design
Tactical Design
Problem Space
Solution Space
Bounded Context
Ubiquitous Language
Core Subdomain
Supporting
Subdomain
Generic Subdomain
Context Maps
Anti-Corruption Layer
Shared Kernel
Open Host Service
Separate Ways
Partnership
Customer-Supplier
Conformist
Domain Model
Entity
Value Object
Aggregate
Repository
Factory
Application Service
Domain Service
Domain Event
@suksr

32. ValueChain
InvisibleVisible
Evolution
Visualisation of a
value chain’s
evolution
Genesis Custom-Built Product (+rental) Commodity (+utility)
Position
Movement
Wardley Maps BY SIMON WARDLEY
Uncharted Industrialised
@suksr

33. Wardley Maps – VALUE CHAIN
Who are your users?
ValueChain
InvisibleVisible
@suksr

34. Wardley Maps – VALUE CHAIN
Who are your users?
What are your users’ needs?
ValueChain
InvisibleVisible
@suksr

35. Wardley Maps – VALUE CHAIN
Who are your users?
What are your users’ needs?
What are the components/activities to fulfill
your users’ needs incl. dependencies?
ValueChain
InvisibleVisible
Position
@suksr

36. Wardley Maps – LANDSCAPE
ValueChain
InvisibleVisible
Evolution
Components along
evolution axes
Genesis Custom-Built Product (+rental) Commodity (+utility)
Position
Movement
@suksr

37. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Everything evolves
Past Current Future
Supply CompetitionDemand Competition
Uncharted Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

38. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Everything evolves
Past Current Future
Continuous adaption
Wardley Maps – PATTERNS
Movement
Evolution
@suksr

39. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Past Current Future
Characteristics changeUncharted
Undefined market
Uncertain
Unpredictable
Rare
Poorly understood
Forming market
Learning on use
Increasing understanding
Slowly increasing
consumption
Rapid increases in
learning
Growing market
Learning on operation
Increasing education
Rapidly increasing
consumption
Rapid increase in use
Mature market
Known / accepted
Stable
Widespread and stabilising
Commonly understood
(in term of use)
Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

40. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Efficiency enables innovation
Uncharted Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

41. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Efficiency enables innovation
Uncharted Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

42. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Efficiency enables innovation
Uncharted Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

43. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Efficiency enables innovation
Uncharted Industrialised
Wardley Maps – PATTERNS
Movement
@suksr

44. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Wardley Maps – PRINCIPLES
Use appropriate methods
per evolution stage
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
@suksr

45. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Use appropriate methods
per evolution stage
Wardley Maps – PRINCIPLES
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
@suksr

46. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Use appropriate methods
per evolution stage
Wardley Maps – PRINCIPLES
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
@suksr

47. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Know your users &
focus on user needs
Wardley Maps – PRINCIPLES
Build in-house / Agile
Use/buy off-the-shelf product / Lean
Outsource to utility suppliers / Six Sigma
@suksr

48. Domain Driven Design
Ubiquitous Language
Domain Knowledge
Understanding the problem domain first
before solving it
Problem Domain
Domain
Experts
Development
Teams
Collaboration
@suksr

49. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
DDD & Wardley Maps Problem Domain
Strategic Design
DDD Patterns &
Practices
Tactical Design
@suksr
StrategicDesignTacticalDesign

50. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
DDD & Wardley Maps Problem Domain
Strategic Design
DDD Patterns &
Practices
Tactical Design
Analysing the
business
domain
Discovering
Subdomains
Problem Space
@suksr
ProblemSpace
StrategicDesignTacticalDesign
Analyse&Discover

51. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
DDD & Wardley Maps Problem Domain
Strategic Design
DDD Patterns &
Practices
Tactical Design
Analysing the
business
domain
Discovering
Subdomains
Problem Space
Decomposing
into modular
components
(Bounded
Contexts (BC))
Mapping
interaction
patterns
between BC
(Context Maps)
Solution Space
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Analyse&DiscoverDecompose&
Map
High-Level
Design Decisions

52. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
DDD & Wardley Maps Problem Domain
Strategic Design
DDD Patterns &
Practices
Tactical Design
Architecting a solution
fitting the problem
domain as closely as
possible
Provides
building blocks
to implement
domain model
Analysing the
business
domain
Discovering
Subdomains
Problem Space
Decomposing
into modular
components
(Bounded
Contexts (BC)
Mapping
interaction
patterns
between BC
(Context Maps)
Solution Space
@suksr
Solution Space
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Analyse&DiscoverArchitect&
Implement
High-Level
Design Decisions
Low-Level
Design Decisions
Decompose&
Map

53. Analyse&Discover
ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Distilling the problem
domain & discovering the
core subdomain
DDD & Wardley Maps
Core
Subdomain
Problem Domain
STRATEGIC DESIGN (PROBLEM SPACE)
Supporting
Subdomain
Generic
Subdomain
@suksr
ProblemSpace
StrategicDesign

54. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Distilling the problem
domain & discovering the
core subdomain
DDD & Wardley Maps
Core
Subdomain
Problem Domain
Competitive advantage
Complex
Changes often
Build in-house
STRATEGIC DESIGN (PROBLEM SPACE)
Supporting
Subdomain
Generic
Subdomain
@suksr
Analyse&Discover
ProblemSpace
StrategicDesign
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers

55. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Distilling the problem
domain & discovering the
core subdomain
DDD & Wardley Maps
Core
Subdomain
Problem Domain
Competitive advantage
Complex
Changes often
Build in-house
No competitive advantage
Quite simple
Does not change often
Prefer to buy/use off-the-shelf
STRATEGIC DESIGN (PROBLEM SPACE)
Supporting
Subdomain
Generic
Subdomain
@suksr
Analyse&Discover
ProblemSpace
StrategicDesign
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers

56. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Distilling the problem
domain & discovering the
core subdomain
DDD & Wardley Maps
Core
Subdomain
Problem Domain
Competitive advantage
Complex
Changes often
Build in-house
No competitive advantage
Quite simple
Does not change often
Prefer to buy/use off-the-shelf
No competitive advantage
Generally complex
Does not change often
Buy/use off-the-shelf / outsource
STRATEGIC DESIGN (PROBLEM SPACE)
Supporting
Subdomain
Generic
Subdomain
@suksr
Analyse&Discover
ProblemSpace
StrategicDesign
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers

57. Decompose&
Map
Analyse&Discover
ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Model Driven Design
DDD & Wardley Maps
STRATEGIC DESIGN (SOLUTION SPACE)
Development
Teams
Domain
Experts
Ubiquitous
Language
Analysis
Model
Code
Model
Domain Model
Core
Subdomain
Supporting
Subdomain
Generic
Subdomain
Problem Domain
abstracted by
@suksr
ProblemSpaceSolutionSpace
StrategicDesign

58. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Bounded Contexts
DDD & Wardley Maps
STRATEGIC DESIGN (SOLUTION SPACE)
Core
Subdomain
Supporting
Subdomain
Generic
Subdomain
Problem Domain
Linguistic/semantic
boundary
Ownership boundary
Model integrity boundary
Physical boundary
Different architectural
patterns per context
possible
@suksr
Microservice candidates
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

59. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Know your users &
focus on user needs
Submit
Session
DDD & Wardley Maps
STRATEGIC DESIGN (PROBLEM SPACE)
Speaker
@suksr
Analyse&Discover
ProblemSpace
StrategicDesign

60. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
STRATEGIC DESIGN (PROBLEM SPACE) Discovering
subdomains
Supporting GenericCore
@suksr
Analyse&Discover
ProblemSpace
StrategicDesign

61. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
STRATEGIC DESIGN (SOLUTION SPACE)
Supporting GenericCore
Event Evaluation AccountSchedule MessageSession
Domain Models
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpaceSolutionSpace
StrategicDesign

62. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
Event Evaluation AccountSchedule Message
Speaker
Session
CfP
STRATEGIC DESIGN (SOLUTION SPACE)
Domain Models
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

63. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
Event Evaluation AccountSchedule Message
Speaker Profile
Submitted
Session
CfP
Settings
Recipient
Open CfP Evaluated
Session
Scheduled
Session
STRATEGIC DESIGN (SOLUTION SPACE)
Domain Models
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

64. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
STRATEGIC DESIGN (SOLUTION SPACE)
Bounded Contexts
Linguistic/semantic
boundary
Model integrity boundary
Event Evaluation AccountSchedule MessageSubmitted
Session
CfP
Settings
Recipient
Open CfP Evaluated
Session
Scheduled
Session
Speaker Profile Session
Evaluation
Submission
Handling
Event
Mngmnt.
Schedule
Mngmnt.
Messaging
Account
Handling
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

65. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
STRATEGIC DESIGN (SOLUTION SPACE)
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
Bounded Contexts
Ownership boundary
Linguistic/semantic
boundary
Model integrity boundary
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

66. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
STRATEGIC DESIGN (SOLUTION SPACE)
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
Bounded Contexts
Ownership boundary
Linguistic/semantic
boundary
Model integrity boundary
Physical boundary
SCM
Data store
CI/CD
Artefact
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpace
StrategicDesign
SolutionSpace

67. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
TACTICAL DESIGN
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
Architectural
Patterns
Architectural patterns can
differ per Bounded Context,
e.g.
Layered
Architecture
Hexagonal
Architecture
CQRS
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement

68. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
TACTICAL DESIGN
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
Business Logic
Implementation Patterns
Business logic implementation
patterns can differ per
Bounded Context, e.g.
Domain
Model
Active
Record
Transaction
Script
@suksr
Decompose&
Map
Analyse&Discover
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement

69. Example
BC: EVENT MANAGEMENT
Event
create: Event
activate
reschedule
rename
EventId
id: string
Name
create: Name
name: string
EventStatus
CREATED
ACTIVATED
DEACTIVATED
deactivate
Description
create:
Description
desc: string
Period
create: Period
start: Date
end: Date
Value
Object
Entity
Aggregate
Root
Aggregate
@suksr
EventController
MongoDBEventRepository
EventModel
EventApplicationService
EventRepository
POST /events/{id}/activatePOST /events DELETE /events/{id}
Inner
Outer
Outside
(Port)
(Adapter)
(Adapter)
(Port)

70. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
TACTICAL DESIGN
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
DDD suits best for the
core subdomain
Movement
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
- or -
- or -
@suksr
- or -
Decompose&
Map
Analyse&Discover
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement

71. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Wardley Maps
Supporting GenericCore
INFRASTRUCTURE MAPPING
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Understand the involved
components and their
dependencies (position)
Position
Data Storage
Infrastructure

72. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Understand the involved
components and their
dependencies (position)
Data StorageSearch Engine
Wardley Maps
INFRASTRUCTURE MAPPING
Position
Infrastructure

73. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Understand the involved
components and their
dependencies (position)
Data StorageSearch Engine
Compute Platform
Wardley Maps
INFRASTRUCTURE MAPPING
Position
Infrastructure

74. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Understand the involved
components and their
dependencies (position)
Data StorageSearch Engine
Compute Platform
VM
Wardley Maps
INFRASTRUCTURE MAPPING
Position
Infrastructure

75. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Data Storage
Search Engine
Compute Platform
VMMovement
Plot components along
evolution axes (movement)
and use appropriate method
per evolution stage
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Infrastructure

76. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Data Storage
Search Engine
Compute Platform
VM
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Infrastructure
& operational
complexities
Wardley Maps
INFRASTRUCTURE MAPPING
Infrastructure

77. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Data related
components & activities
Compute
Platform
Data Storage
Search Engine
VM
Wardley Maps
INFRASTRUCTURE MAPPING
Infrastructure

78. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
DDD & Wardley Maps
Supporting GenericCore
TACTICAL DESIGN
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Search Engine
Compute
Platform
Data Storage
VM
Service related
components & activities
Infrastructure

79. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Schedule
Mngmnt. Messaging Account
Handling
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Search Engine
Compute
Platform
Data Storage
VM
Service interaction
related components &
activities
Wardley Maps
INFRASTRUCTURE MAPPING
Infrastructure

80. command
query
Request-Driven
@suksr
API
API
Service Interactions

81. command
query
Request-Driven
Message Broker
publish subscribe
Event-Driven
@suksr
API
API
Service Interactions

82. command
query
Message Broker
publish subscribe
command
query
Request-Driven Hybrid
Message Broker
publish subscribe
Event-Driven
@suksr
API
API
API
Service Interactions

83. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Search Engine
Compute
Platform
Data Storage
VM
Request-driven related
components & activities
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
Infrastructure

84. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Compute
Platform
VM
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
Event-driven & hybrid
related components &
activities
Message
Broker
Search
Engine
Data Storage
Infrastructure

85. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Compute
Platform
VM
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
Message
Broker
Search
Engine
Data Storage
Discuss & plan
Infrastructure

86. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Compute
Platform
VM
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
Message
Broker
Search
Engine
Data Storage
Discuss & plan
Open Source Software
Infrastructure

87. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
Example
Message
Broker
Search
Engine Data
Storage
Compute Platform
VM
Open Source Software
Infrastructure

88. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
Message
Broker
Search
Engine Data
Storage
Compute Platform
VM
Discuss & plan
Offload to cloud
hosted services
Infrastructure

89. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
Compute Platform
VM
DB aaS
SE aaS
MB aaS
Offload to cloud
hosted services
ID aaS
Infrastructure

90. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
Compute Platform
VM
DB aaS
SE aaS
MB aaS
Discuss & plan
Offload to container
orchestration platform
ID aaS
Infrastructure

91. Managed by YOU
Managed by PlatformHardware
O/S
Virtualization
Container
Runtime
O/S
Orchestration
µService
Container
Runtime
µService
Service Discovery
Load Balancer
Config-Mngmt.
Monitoring
Log Aggreation
Health Checks
Recovery Scaling
@suksr
Container Orchestration
API Gateway

92. Containerized
Microservice
Pod
Service
Volume
Deployment
Master Node
Worker NodeWorker Node
Ingress
Deployment Deployment
Container Orchestration
BASIC COMPONENTS OF KUBERNETES

93. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Container Orchestration
w/ Kubernetes
Compute Platform
ID aaS

94. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Container Orchestration
w/ Kubernetes
Compute Platform
Pod Deploym. Volume IngressService
New Primitives
ID aaS

95. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Container Orchestration
w/ Kubernetes
Compute Platform
Pod Deploym. Volume IngressServiceSecretStateful
Set
Cron
Job
JobConfig
Map
Network
Policy
Replica
Set
Daemon
Set
Horizontal
Pod Autoscaler
Persistent
Volume
ClaimEgress
more ...
ID aaS
Infrastructure

96. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
OSS
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Compute Platform
Container Orchestration
Discuss & plan
Offload application
networking concerns
to a service mesh
ID aaS
Infrastructure

97. Circuit Breaker Timeout Retries
Kubernetes / Service Mesh
Sidecar
Proxy
Application Networking Concerns
@suksr
Metrics Security
Sidecar
Proxy
Distributed Tracing Log Aggregation
Separation Of Concerns
SERVICE MESH

98. Proxy Proxy
Microservice Microservice
Policy & Telemetry
(Mixer)
Discovery & Config
to Proxies
(Pilot)
Config
(Galley)
TLS Certs to
Proxies
(Citadel)
Data Plane
Control Plane
HTTP, gRPC, TCP
mTLS
Service Mesh
COMPONENTS OF ISTIO

99. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Container Orchestration
ID aaS
Destination
Rule Gateway
Service
Entry Policy
ServiceRole /
-Binding ClusterRbac
Config
Virtual
Service
Service Mesh
Infrastructure

100. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
EvaluateManage
Organiser
Build & Publish Communicate Signup/Signin
Speaker
Submit
Supporting GenericCore
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalD.
ScheduleSession Event Submission w/ Speakers
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
Wardley Maps
INFRASTRUCTURE MAPPING
Submission H. Event M. Session Eval. Schedule M. Messaging Account H.
VM
DB aaS
MB aaS
Worker Nodes Master Node
SE aaS
Container Orchestration
ID aaS
Service Mesh
Discuss & plan
Move to
Serverless
Infrastructure

101. FunctionEvent
Event-Driven Workflow
Hardware
Data Store
O/SVirtualization Container Runtime
Fully Managed By Third Party
Ephemeral Function
Pay-per-ExecutionAuto-Scaling
@suksr
triggers
Serverless w/ FaaS
CHARACTERISTICS

102. Lambda
API Gateway
SNS
SQS
DynamoDB
Step Functions
Core AWS Serverless Building Blocks
S3
Kinesis
CloudWatch
Cognito
@suksr
IAM
and more
Serverless
AWS BUILDING BLOCKS

103. ApiGatewayAdapter
DynamoDBAdapter
EventModel
EventApplicationService
EventRepository
DynamoDB
newEvent
API Gateway
Manage
EventOrganiser
Event Management

104. ApiGatewayAdapter
DynamoDBAdapter
EventModel
EventApplicationService
EventRepository
EventPublisherSNSTopicAdapter
DynamoDB
SNS
newEvent activateEvent
API Gateway
Manage
EventOrganiser
Event Management

105. ApiGatewayAdapter
DynamoDBAdapter
EventModel
EventApplicationService
EventRepository
EventPublisherSNSTopicAdapter
DynamoDB
SNS
newEvent activateEvent
API Gateway
Manage
Event
DynamoDBAdapter
SessionModel
SessionApplicationService
SessionRepository
DynamoDBSNSTopicAdapter
eventActivated
Organiser
Event Management Session Handling

106. ApiGatewayAdapter
DynamoDBAdapter
EventModel
EventApplicationService
EventRepository
EventPublisherSNSTopicAdapter
DynamoDB
SNS
newEvent activateEvent
API Gateway
Manage
Event
ApiGatewayAdapter
DynamoDBAdapter
SessionModel
SessionApplicationService
SessionRepository
DynamoDB
submitSession
API Gateway
Submit
Session
SNSTopicAdapter
eventActivated
S3Adapter
S3
pictureUploaded
Organiser Speaker
Event Management Session Handling

107. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Evaluate
Submissions
Manage
Event
Organiser
Build & Publish
Schedule
Communicate
w/ Speakers
Signup/Signin
Speaker
Submit
Session
DDD & Wardley Maps
Supporting GenericCore
TACTICAL DESIGN
Submission
Handling
Event
Mngmnt.
Session
Evaluation
Messaging Account
Handling
Schedule
Mngmnt.
Build in-house
Use/buy off-the-shelf product
Outsource to utility suppliers
@suksr
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Serverless w/ FaaS
API Gateway
Lambda DynamoDB S3 SNS
Cognito
SE aaS
Infrastructure

108. Serverless Infrastructure Providers

109. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Summary
@suksr
Know your users
& user needs

110. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Summary
Supporting GenericCore
@suksr
Decompose
&Map
Analyse&Discov.
ProblemSpaceSolutionSp.
StrategicDesign
Know your users
& user needs
Understand the
problem first and
focus on core domain

111. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Summary
Supporting GenericCore
@suksr
Decompose
&Map
Analyse&Discov.
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement
- or -
- or - - or -
Know your users
& user needs
Understand the
problem first and
focus on core domain
DDD suits well for your
core domain

112. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Summary
Supporting GenericCore
@suksr
Decompose
&Map
Analyse&Discov.
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement
Infrastructure
Know your users
& user needs
Understand the
problem first and
focus on core domain
DDD suits well for your
core domain
Identify and outsource
commodities

113. ValueChain
InvisibleVisible
Genesis Custom-Built Product (+rental) Commodity (+utility)
Evolution
Summary
Supporting GenericCore
@suksr
Decompose
&Map
Analyse&Discov.
ProblemSpaceSolutionSpace
StrategicDesignTacticalDesign
Architect&
Implement
Infrastructure
Know your users
& user needs
Understand the
problem first and
focus on core domain
DDD suits well for your
core domain
Identify and outsource
commodities
Efficiency enables
innovation

114. Some References
https://learnwardleymapping.com/
https://medium.com/wardleymaps
https://miro.com/blog/wardley-maps-whiteboard-canvas/
https://community.wardleymaps.com/