The document discusses building serverless multi-cloud applications using an event gateway, which functions as a real-time data-flow engine for event-driven architectures. It covers the capabilities of the event gateway, including handling events from various cloud service providers and decoupling logic for efficient development. Additionally, it provides resources for getting started, such as a product page, GitHub repository, and example applications.

1. Using the Event Gateway to build
serverless multi-cloud applications

2. philipp@serverless.com
@pmmuens
Philipp Müns
Software Engineer, Serverless Inc.

4. architectures
serverless

5. http://theburningmonk.com/2016/12/yubls-road-to-serverless-architecture-part-1/

7. # serverless.yml
service:
name: users
description: Users CRUD service
provider:
name: aws
runtime: nodejs6.10
stage: prod
region: us-east-1
functions:
register:
handler: users.register
events:
- http:
path: /users
method: POST

9. Use Cases
● Web, mobile, IoT backends
● Form processing
● Auth
● DevOps automation
● Stream processing
● Chatbots
● Voice apps
● GraphQL API
● ETL
● CRON jobs
● Webhooks
● Dynamic HTML
...

10. Server-Less == Service-Full

11. Going multi-cloud
AWS Azure Google IBM On-Prem
FaaS FaaS FaaS FaaS FaaS
Business Problem

12. at a large scale is still hard
serverless

13. The highly productive event router for FaaS
Event Gateway

14. ● “Realtime data-flow engine” (L7 Proxy)
● Events (data) → Functions (serverless compute)
● API Gateway & Pub/Sub
● Run FaaS on any provider → Cross-cloud applications
● Extensible through middlewares and plugins
● Hosted version / On-Prem
What is the Event Gateway?

15. AWS
Lambda
Azure
Functions
Google Cloud
Functions
Event
Event Gateway
On-Prem FaaS...

16. Goals
● Express all data as events
● React to any event, with any FaaS, in any location
● Be flexible, develop fast
● Accommodate many use-cases
● Decouple logic
● Decouple teams

17. Express all data as events
● Receives data via HTTP and
interprets it as an event
● Ingests custom event schemas
● Ingests HTTP requests as events
● Emits logs, metrics & errors as events
Data

18. ● Any event
● Supports major FaaS providers
● Discovery
● Composition
● Communication
React to any event, with any FaaS, in any location
AWS
Lambda
Azure
Functions
Google Cloud
Functions

19. Be flexible, accommodate many use-cases

20. Be flexible, accommodate many use-cases
Pub/Sub
HTTP
request with
special
headers
Request body
is converted to
an event

21. Be flexible, accommodate many use-cases
Pub/Sub
HTTP
request with
special
headers
Request body
is converted to
an event
API
Gateway
HTTP
request
Request is
converted to
an HTTP event

22. Be flexible, accommodate many use-cases
Pub/Sub
HTTP
request with
special
headers
Request body
is converted to
an event
API
Gateway
HTTP
request
Request is
converted to
an HTTP event
Webhooks
HTTP
request from
a supported
integration
Event
Gateway
knows what to
do

23. Decouple logic, decouple teams
App
Functions
Marketing
Functions
HR
Functions
Event
● FaaS decouples logic
● Event-driven design decouples teams

24. an example
event gateway

25. An example
google-hello
aws-hello

26. An example
curl --request POST
--url http://localhost:4001/v1/functions
--header 'content-type: application/json'
--data '{
"functionId": "aws-hello",
"provider":{
"type": "awslambda",
"arn": "arn:aws:lambda:::function:aws-hello",
"region": "us-east-1"
}
}'
google-hello
aws-hello

27. An example
curl --request POST
--url http://localhost:4001/v1/functions
--header 'content-type: application/json'
--data '{
"functionId": "google-hello",
"provider":{
"type": "http",
"url": "https://cloudfunctions.net/google-hello"
}
}'
google-hello
aws-hello

28. An example
curl --request POST
--url http://localhost:4001/v1/subscriptions
--header 'content-type: application/json'
--data '{
"functionId": "aws-hello",
"event": "http",
"path": "/aws-hello",
"method": "GET"
}'
google-hello
aws-hello

29. An example
curl --request POST
--url http://localhost:4001/v1/subscriptions
--header 'content-type: application/json'
--data '{
"functionId": "google-hello",
"event": "google.hello",
"path": "/google-hello"
}'
google-hello
aws-hello

30. An example
curl http://localhost:4000/aws-hello
google-hello
aws-hello

31. An example
curl --request POST
--url http://localhost:4000
--header 'content-type: application/json'
--header 'event: google.hello'
--data '{ "firstName": "John", "lastName": "Doe" }'
google-hello
aws-hello

32. old architecture
serverless

33. FaaS (single provider)
Workflows (e.g. AWS StepFunctions)
Streaming Data (e.g. AWS Kinesis)
Pub/Sub (e.g. AWS SNS)
API Gateway (e.g. AWS API Gateway)

34. new architecture
serverless

35. FaaS (multi cloud / on-prem)
Event Gateway

36. how do I get started?
Event Gateway

37. How do I get started?
● Product page → https://serverless.com/event-gateway
● GitHub repository → https://github.com/serverless/event-gateway
● Hosted version → https://serverless.com/event-gateway/enterprise
● Example application → https://github.com/serverless/event-gateway-example
● Workshop / Tutorial → https://github.com/serverless/event-gateway-workshop

38. AWS
Lambda
Azure
Functions
Google Cloud
Functions
Pub/SubAPI Endpoints Webhooks
Event Gateway

39. maciej@serverless.com
@mthenw
Maciej Winnicki
Event Gateway Architect

40. philipp@serverless.com
@pmmuens
Philipp Müns
Software Engineer, Serverless Inc.