Azure Functions has been a popular growing service due to how simple it makes for developers, IT-pros and data professionals to build applications in the cloud. But how does Microsoft deliver on the serverless promise? What's next for serverless and FaaS ? This talk will go through some of the most popular aspects of Azure Functions and provide details of how it works. It will also paint the picture of what's next, with some concepts demonstrated in practice.

1. Session
Eduardo Laureano
Azure Functions
Internals & Future Direction

2. Plan

3. AboutMe

4. Functions:GrowthPillars
Product
• Functions 2.0
• Security
• Languages
• Hosting options
• Platforms
Business
• Growth
Momentum
• Enterprises
• Open source
serverless
Reach
• Communities
• Feedback
• Content

5. RecentReleases(notcoveredtoday)
http://serverlesslibrary.net

6. i.DevelopmentLifecycle

7. Functions Code Config
FunctionsArchitecture (Windowsstack)

8. How does itimpactdevexperiences?

9. Extensions modelevolution
host.json

10. Innerand OuterLoop Development

12. ii.Networking

13. Simplifiedcloudarchitecture
FE
VM1
VM1
rented
FE
VM2
VM2
sold
VM3
free
VM4
free
VM1 VM2
FE
VM1
VM1
FE
VM2
VM2
VM3
VM4
VM1 VM2

14. How privatecan you getina Multi-tenant
world?

15. No HTTPTriggers
Internet

16. No HTTPTriggers
Internet
Functions
Runtime
HTTP Front-ends

17. Premium + ServiceEndpoints
Internet
Functions
Runtime
HTTP Front-ends
Virtual Network
(VNET)

18. Premium + VNETIntegration
Internet
Functions
Runtime
HTTP Front-ends
Virtual Network
(VNET)

19. Premium + VNETIntegration
+ ServiceEndpoints Internet
Functions
Runtime
HTTP Front-ends
Virtual Network
(VNET)

20. Virtual Network
(VNET)
App ServiceEnvironment
Internet
Functions
Runtime
HTTP Front-ends

21. iii.Scalability

22. • Generic HTTP protocol
• Reactive scaling
Azure Functions“Webhook” trigger
Function code
Http Request
Http Response
Front
End
Scale Controller
HTTP
Endpoint
Function Instance

23. • Predictive scaling
• Awareness of the event source
• Works locally
Azure Functions “Polling” trigger
Function code
Scale Controller
Event
Source
SDK
Function Instance
Event Source
(e.g. Queue)
1. Polls to check if new events 2. Create / scale function
instances
3. Events pulled directly
from source and sent to
user code

24. Supportednon-HTTPtriggers

25. Howdoesthislook from the“outside”?

26. 0
1
2
3
4
5
6
0 2 4 6 8 10 12 14
Ideal Scale Behavior
Load ConsumptionWorkers

27. 0
1
2
3
4
5
6
0 2 4 6 8 10 12 14
Realistic Scale Behavior
Load Available Workers

28. 0
1
2
3
4
5
6
0 2 4 6 8 10 12 14
Scale with One Reserved Instance
Load Elastic Premium Workers (1 Dedicated)

30. iv.HostingModels

31. 31
Docker engine
Script
host
Language
process
Docker engine
Script
host
Language
process

32. Platform
App delivery
OS
●●● ●●●
●●●
+
https://github.com/azure/azure-functions-host
(+other repos)
Azure Functions
host runtime
Azure Functions
Core Tools
Azure Functions
base Docker image
Azure Functions
.NET Docker image
Azure Functions
Node Docker image
●●●

33. Futures

34. Trends/ Direction

35. Serverless+ Containers+ Kubernetes

36. • Provide feedback:
• Twitter: @azurefunctions; @eduardolaureano;
• Stack Overflow: https://stackoverflow.com/questions/tagged/azure-functions
• File issues: https://github.com/azure/azure-functions/issues
• Learn and Share:
• Docs: https://docs.microsoft.com/en-us/azure/azure-functions/
• Learn: https://docs.microsoft.com/en-us/learn/modules/create-serverless-logic-with-azure-
functions/
• Github main repo: https://github.com/Azure/Azure-Functions
• Share your solutions: https://serverlesslibrary.net/
Contribute+ Feedback Loop

37. Questions

39. Event
partners
Expo
partners
Expo light
partners