AWS Lambda is a serverless compute service that runs code in response to events, automatically managing resources. It handles capacity, scaling, deployment, monitoring, logging, and security patching. Developers pay only for the compute time used to run their code, avoiding the need to provision and manage servers. Lambda functions can be triggered by events from services like API Gateway or S3 and are written in languages like Node.js, Python, Java, and C#.

1. AWS Lambda:
back-end for
front-enders
Brandon Westcott
2017/06/26

2. Agenda
What is lambda
How it works
Do it live

3. What is Lambda?
A serverless compute service that runs your code in
response to events and automatically manages the
underlying compute resources for you.

4. No Servers
AWS Lambda handles
• Capacity
• Scaling
• Deployment
• Monitoring
• Logging
• Web service front end
• Security patching

5. Automatic
Scaling
AWS Lambda handles
• Lambda scales to match the
event rate
• Don’t worry about over or
under provisioning
• Pay only for what you use
• New app or successful app,
Lambda matches your scale

6. Pay for Use
Pay only for what you use:
● Charged in 100ms increments
● Low request charge
● No hourly, daily or monthly
minimums
● No per-device fees
● Never pay for idle!

7. Lambda is Lambda isn’t
● Magic backend genie
● WYSIWYG code generator
● GUI backend toolset
● An extremely simple way to
run your backend code
● An AWS tool which allows you
to leverage the rest of the
AWS ecosystem easily

8. How it works
Triggers Lambda
Function

9. The Code
● Node.js (JavaScript)
● Python
● Java (Java 8 compatible)
● C# (.NET Core)

10. Demos
● API Gateway w/ swagger
● Claudia
● S3 Image Resizing

16. S3 Image Resize on Lambda

22. Resources
https://github.com/claudiajs/claudia
https://github.com/awslabs/chalice
https://github.com/awslabs/serverless-application-model
https://s3.amazonaws.com/lambda-tools/pricing-calculator.html
https://github.com/serverless/serverless