Introduction to Azure Functions and other Serverless services in Microsoft Azure.

1. Going Serverless with
Azure Functions
Giulio Santoli, CSA

2. Why Serverless?

3. it’s just a matter of
EVOLUTION

4. from IaaS to FaaS (Function as a Service)
Docker
Swarm
Mesos
Kubernetes
Function App
Cloud Foundry

5. PaaS vs FaaS
with framework (PaaS) without framework (FaaS)
PaaS = Platform as a Service
FaaS = Functions as a Service

6. FaaS ≤ Serverless
FaaS = Functions as a Service

7. Serverless
Reacts to events
Autoscales
Pay-per-use

8. OpenFaaS Kubeless
Fn Project
OpenWhisk
Azure Functions
AWS Lambda
Functions
Google Cloud
Functions
https://github.com/Azure/Azure-Functions

9. The three musketeers
of Serverless
Event Grid
Serverless Events
Logic Apps
Serverless Workflow
Functions
Serverless Compute
Storage
(Queue, Table, Blob)

10. Event Grid
Backbone of event-driven computing
High reliabilityNear real-time Massive scale-out

11. Cloud Native Computing Foundation (CNCF) in partnership with Microsoft, Google, IBM, Oracle and others

12. Logic App workflows

14. Azure Functions
➢ Charge by GBs + Executions
➢ Limited to 5 mins (up to 10 minutes)
➢ Stateless

15. Author functions in
C#, F#, Node.JS,
Java, and more
CodeTrigger/Inputs
React to timers,
HTTP, or events from
your favorite Azure
services, with more
on the way
Outputs
Send results to an
ever-growing
collection of
services
Triggers & Bindings

16. Local development and
debugging
Visual Studio Code
Azure Functions Extensions
Visual Studio CLI

17. Every 15 minutes Clean tableFind and clean invalid data

18. Photo taken and
Webhook called
Stored in Blob Storage Produces scaled images

19. File added to
Blob Storage
CSV
Transform CSV to data rows PowerBI Charts

20. Excel File saved
on OneDrive
Microsoft Graph analyzes content PowerBI Charts

21. Supported Languages
Language Runtime 1.x Runtime 2.x
C# GA Preview
JavaScript GA Preview
F# GA Preview
Java N/A Preview
Python Experimental N/A
PHP Experimental N/A
TypeScript Experimental N/A
Batch (.cmd, .bat) Experimental N/A
Bash Experimental N/A
PowerShell Experimental N/A

22. PowerShell Example

23. Durable Functions
➢ Programmatic Orchestration
➢ Stateful Singleton
➢ Human Interaction
➢ C# (GA) and JavaScript (Preview)

24. Functions
Chaining
Fan-Out
Fan-In

25. Deployment

26. o Continuous Deployment
Bitbucket, Dropbox, Git local/external, GitHub, OneDrive, VSTS
o Command Line Tools
PowerShell, Azure CLI, Functions CLI
o REST APIs
PowerShell, Bash, any software
o IDE Integrations
Visual Studio, Visual Studio Code, IntelliJ

27. ✓ Each function has a folder
containing function.json
✓ Dependencies are usually local
to each function
✓ One global host.json
Directory Tree Structure

28. Deploying a Zip File with Azure CLI

29. Deploying with REST APIs

30. beware of cold starts

31. https://docs.microsoft.com/en-us/azure/azure-functions/functions-runtime-install
Local Azure Fuction Runtime (preview)
✓ Windows Server 2016 or Windows 10 Creators Update
✓ Needs a local SQL Server instance
✓ Two roles: Managent and Worker

32. Summary
➢ FaaS is a further abstraction over PaaS
➢ Serverless concerns compute, events and workflow (and
storage)
➢ Serverless adopts a pay-per-use model
➢ Azure Functions is a FaaS solution, supporting a
powerful on-prem development experience

33. Thankyou

34. Books
https://azure.microsoft.com/en-us/resources/azure-serverless-computing-cookbook
FREE

35. Productive + Hybrid + Intelligent + Trusted