This document discusses serverless computing on AWS. It provides an overview of AWS serverless services like Lambda, API Gateway, S3, DynamoDB, and others. It discusses how these services work and their advantages like automatic scaling, high availability, and pay-per-use pricing. It then presents three use cases where a company called SourceFuse leveraged various AWS serverless technologies to build applications for video ad generation, route mapping, and transport request processing.

1. Serverless
Computing
AWS Way
By: Manpreet Singh, CTO

2. WHO WE ARE
We are a team of over 150 technologists
helping companies increase revenues
and decrease expenses through
technology and product development.

3. We are Experienced
◎SourceFuse has been delivering innovative
custom applications since 2005.
◎We apply that expertise to your project, giving you
the benefit of our experience every step of the way.
◎Products we built have won startup challenges,
been featured in major channels, received funding
and awards!
40+Mobile
Products Built
1,000+Web Apps
Deployed

4. Serverless Computing
Build and run applications without thinking about
servers
No Server Management
Flexible Scaling
High Availability
No idle capacity

5. It's Evolution
Data Centre
Virtualization
Cloud
Computing
Containers
Serverless

6. AWS Serverless Platform
Compute - Lambda
API Proxy - API Gateway
Object Storage - S3
Database - DynamoDB
IPC - SNS, SQS
State Machine - Step Functions
Analytics - Kinesis

7. AWS Serverless Platform
The Magic Happens at the Intersection
of Functions, Events and Data.
(Pretty much everything else is glue or UI)
-Werner Vogels

8. AWS Lambda

9. AWS Compute Offerings
Service EC2 ECS Lambda
Unit of Scale Virtual Machine Application Function
Abstraction at Hardware
Operating
System
Runtime

10. AWS Lambda
Run code without thinking about servers.
Pay for only the compute time you
consume - subsecond metering
Built-in scaling, monitoring and fault-
tolerance
Choice of runtime - node.js, java, c#,
python

11. In node.js
event???
Lambda - Hello World

12. Lambda - Event Sources
Over a dozen event sources

13. Lambda - Event Sources
… and others like DynamoDB, SNS, SES, API
gateway, CodeCommit, Cloudwatch events,
Cloudformation, etc

14. Lambda - Configuration
◎Runtime (node.js, java, c# and python)
◎Environment variables
◎Memory allocated (128MB to 1536 MB)
◎Timeout (upto 5 minutes)
◎Handler function name
◎Role assigned

15. Lambda - Deployment
◎Setup using Cloudformation - SAM
◎CI (can be AWS codebuild, jenkins, etc)
i. Package code with dependencies as a zip file
ii. Put on S3
iii. And create a new version of function

16. Lambda - Versioning
◎Version no. for each deployment
◎Alias for dev, stage, prod, etc (soft link)

17. Lambda - ImPoints
◎Concurrent executions
◎Synchronous vs asynchronous calls
◎Cloudwatch monitoring
◎Retries on error
◎Container reuse
◎Can be made part of VPC

18. AWS API Gateway

19. API Gateway - Why?
Exposing REST API had been challenging:
◎Will have to manage and scale web servers
◎Authorization is tricky over longer run
◎Tough to manage multiple versions of APIs
◎Tedious to monitor access by third party

20. API Gateway - How?
Solves all these problems by -
◎Having multiple versions and stages of API
◎Inbuilt support for security, monitoring and throttling
◎Integration with swagger for maintainable and
documented APIs
◎Request/Response transformation
◎Easily connects to backend like Lambda/EC2
◎API Mocking

21. API Gateway - Flow

22. API Gateway - Versions

23. AWS Serverless
Reference
Architectures

24. AWS Web Reference Architecture

25. AWS Mobile Reference Architecture

26. SourceFuse Using
AWS Serverless

27. UC1 - adpoint.video
◎Engine to generate video ads
◎Video template is configurable
◎Video made using multiple Lambda functions
using ffmpeg for video manipulation
◎Speech to text to sync text with audio

28. UC1 - adpoint.video
Configuration
Sample Output - Dollar Tree

29. UC2 - RelayTransport
Lambda function which generates route image
using google maps and latitude-longitude array

30. UC3 - RelayTransport
Accepting transport requests over email
Incoming
email
Send SNS Triggers Lambda
AWS SES AWS SNS Parses Email
Creates job for
app to process
AWS SQS

31. LET’S CONNECT
Would you like to innovate faster,
increase profits, launch a new
product, or disrupt your market
using AWS?
connect@sourcefuse.com