This document discusses using event-driven architectures and serverless computing with AWS services. It begins with defining event-driven architectures and how serverless architectures relate to them. It then outlines several AWS services like EventBridge, Step Functions, SQS, SNS, and Lambda that are well-suited for building event-driven applications. The document demonstrates using S3, DynamoDB, API Gateway and other services to build a serverless hotel data ingestion and shopping platform that scales independently for static and dynamic data. It shows how to upload, store, and stream hotel data and expose APIs using serverless AWS services in an event-driven manner.

1. AWS Serverless
Event-driven
Architecture

2. Agenda
● EDA
● Serverless related to EDA
● DEMO

3. EDA
Event-driven architectures are an architecture style that
uses events and asynchronous communication to
loosely coupled an application’s components. Event-
driven architectures can help you boost agility and build
reliable, scalable applications

4. Serverless Architecture
Serverless architectures are application designs that
incorporate third-party “Backend as a Service” (BaaS) services,
and/or that include custom code run in managed, ephemeral
containers on a Functions as a Service (FaaS) platform.
- Martin Fowler

5. Serverless
Serverless services like Amazon EventBridge, AWS Step
Functions, Amazon SQS, Amazon SNS, and AWS Lambda
have a natural affinity with event-driven architectures -
they are invoked by events, emit events, and have built-in
capabilities for building with events

6. AWS Offerings

7. Services related EDA

8. Use Case
“Create a platform which extract Hotel suppliers data (both static & dynamic)
and publish into Shopping catalogs to meet the consistency near real time
for User Search. The platform should scale independently for static & dynamic
funnel. Also the business wants to analyse the change frequency of data for
future evolution”.

9. Demo - Data Ingestion Flow
Upload Static &
dynamic part of
hotel data
Orchestrate
the events
Shop
Projection
Function to read S3
content and update
DynamoDB
● Highly scalable, available, secure object storage.
● A storage with higher durability 99.999999999%.
● It delivers Strong read after write consistency.
Trigger
after a
successful
import
process
● Evolved from Cloudwatch events.
● It's an Event bus that lets you receive, filter, transform, route, and
deliver events.
● Fully Managed NOSQL Database.
● Delivers apps with consistent single digit millisecond performance.
● Nearly unlimited throughput and storage & automatic multi region
replication.

10. Demo - Shopping Flow
Expose Shop
API’s
Shop
Projection
Function to read
data from
dynamoDB
Users
Static
website
hosting
● Different use case for S3: it can be used for static website hosting
● Working with multiple API versions and environments
● Controlling access and authorization
● Managing traffic spikes

11. Demo - Data Streaming
Upload Static &
dynamic part of
hotel data
Store the
data
streams
Orchestrate the
Events
Users
● Collect streaming data in real time - Many -> many
● Store events and allows replay
● Analytics real time

12. Demo - Complete View
Upload Static &
dynamic part of
hotel data
Orchestrate
the events
Shop
Projection
Function to read S3
content and update
DynamoDB
Expose Shop
API’s
Function to read
data from
dynamoDB
Users
Store the
data
streams

13. Serverless Developer Friendly
Build App

14. Questions

15. References
● Tutorial: Log Amazon S3 object-level operations using EventBridge - Amazon EventBridge
● Tutorial: Build a CRUD API with Lambda and DynamoDB - Amazon API Gateway
● Tutorial: Configuring a static website on Amazon S3
● Tutorial: Send data to an Amazon Kinesis Stream using EventBridge

16. Thank you