Swanseacon 2017 Keynote - It's a small world after all.

@aahoogendoorn | www.ditisagile.nlIt’s a small word after all 2
@aahoogendoorn | www.ditisagile.nl
It’s a small world
after all
Sander Hoogendoorn
ditisagile.nl
Mentoring ▪ Consulting ▪ Training
Agile ▪ Software architecture ▪ Code

Sander Hoogendoorn
Me
Dad, software architect, agile coach,
programmer, speaker, writer
Owner ditisagile.nl
CTO ANVA
Former CTO Voldemort Insurances
Former global agile thoughtleader
Capgemini
Web
www.sanderhoogendoorn.com
aahoogendoorn
aahoogendoorn
sander@ditisagile.nl

The Times They
Are a-Changin'

Moore’s Law
The number of transistors in a dense integrated circuit doubles approximately every two years.

The IBM Personal Computer (the 5150). The simplest configuration has 16K on-board
RAM and uses an audio cassette to load and save data. A floppy drive is optional. A hard
drive was not supported. A system for home or school with a memory of 64K bytes, a
single diskette drive and its own display, was priced around $3,000.

Then, in 2006, Amazon launched its Elastic
Compute cloud (EC2) as a commercial web
service that allows small companies and
individuals to rent computers on which to run
their own computer applications.

The Times They
Are a-Changin'
On our block

Where software
goes wrong

Add another feature And never look back

The code doesn’t break when you build it. It falls apart fifteen years later

Too much dependencies will kill you every time

Welcome to the
world of small
moveable parts

SMALLER
COMPONENTS
MICROSERVICES
EVEN SHORTER
CYCLES
BYE BYE SCRUM
THE
CONTINUOUS
CULTURE
SMALLER
AUTONOMOUS
TEAMS
LESS
MANAGEMENT
MORE PRODUCT
MANAGEMENT
MINIMAL VIABLE
PRODUCTS
NO MORE
PROJECTS

The continuous
culture

Complex problems require continuous exploration

The iron triangle of project management

Roadmaps over plans
While there is value in the items on the right, we value the items on the left more

Less rules Amsterdam, Alexanderplein

Allow your teams to learn continuously…

Less is more
Delivering (minimal)
products, not projects

Minimal viable products Think small, deploy early and frequently

Do we need this
NOW?

Even
shorter
cycles
Agile
beyond
Scrum

What does agile mean to you?

Does agile scale?
Is large scale agile just multiple copies of Scrum?

Or does large scale require a large scale process?

Let’s all copy Spotify!

Does agile scale?
If you don’t succeed at agile in a team 5-person team, what makes you think you’ll succeed at enterprise level?

The red sprint anti-pattern

Agile manifesto: delivering continuously

To satisfy the customer through early and
continuous delivery of valuable software
Agile manifesto

How often do you release to production?

Continuous delivery
An approach in which teams ensure that every change to
the system is releasable, and that we can release any
version at the push of a button.
Aimed to make releases boring, so we can deliver
frequently and get fast feedback on what users care about.Jez Humble

Continuous flow

Less estimates

Immutable infrastructure Pets versus cattle

Smaller
autonomous
teams

Smaller teams

Autonomous teams

The living room work space

Mandatory fun Maybe we’re overdoing it a bit?

Dependability.
Team members get things done on time and meet expectations.
Structure and clarity.
High-performing teams have clear goals and well-defined roles within the group.
Meaning.
The work has personal significance to each member.
Impact.
The work of the team is purposeful and positively impacts the greater good.
Psychological Safety.
A culture where managers provide air cover and create safe zones so
employees can let down their guard.
Five key characteristics of enhanced teams
Project Aristotle has managed to study 180 Google teams, conduct 200-plus interviews, and analyze over 250 different team attributes

Traditional teams, agile teams and micro-teams

Team is a pool of people with all the right skills
Often with a ‘technical leader’
Single backlog of small work items
Kanban style board
Small teams form and disband dynamically to
implement epics
Often two to three members
Let the team decide
Product owner becomes an analyst
As little estimates as possible
Stand-ups with whole team
Retrospective on request
Micro-teams

Smaller
components
The world of
microservices

Monoliths
Hard to deliver. Harder to test. Impossible to maintain. But…

Microservices
In short, the microservice architectural style is an approach
to developing a single application as a suite of small services,
each running in its own process and communicating with
lightweight mechanisms, often an HTTP resource API.
These services are built around business capabilities and
independently deployable by fully automated deployment
machinery. There is a bare minimum of centralized management
of these services, which may be written in different programming
languages and use different data storage technologies.
Martin Fowler

Monoliths versus microservices?
MÖNÖLIT
MICRØ

AWS Lambda & Azure Functions Even smaller

Distributed systems
Oh and by the way… Doing microservices
(or serverless) means that you are building
a distributed systemMe

In retrospective
Some final thoughts

Complex problems require continuous exploration

Beyond the point of no return

References
and questions
www.sanderhoogendoorn.com
www.ditisagile.nl
aahoogendoorn
aahoogendoorn
sander@ditisagile.nl

Swanseacon 2017 Keynote - It's a small world after all.

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Swanseacon 2017 Keynote - It's a small world after all.