Serverless architecture allows running code without managing servers by leveraging functions-as-a-service (FaaS) platforms like AWS Lambda. With serverless, developers gain scalable and highly available applications while only paying for compute resources used, without having to manage servers, scaling, or other operational aspects. AWS Lambda automatically handles tasks like load balancing, auto-scaling, failures and security isolations. Common uses of serverless include web applications, APIs, IoT services, and more.

1. Serverless Architecture and
AWS Lambda
By: Nishant Kumar
Senior Engineer @candis.io
@Meetup: JS-Berlin-Geekle-Club @nishant8BITS

2. Ok, So Serverless .....

3. What options are available to run code on cloud ?
● Bare Metal
● IaaS (VM) - AWS EC2 Instance
● CaaS (Container) - AWS ECS , Microsoft Azure
Container Service (ACS)
● PaaS (App) - AWS Elastic Beanstalk, Windows
Azure, Heroku, Google App Engine, Apache Stratos.
● Serverless (Function - FaaS) - AWS Lambda,
Google Cloud Function, Azure Function
More Control,
More Management,
More Code
Less Control,
Less Management,
Less Code

4. Serverless Model
Programming Model Operation Model

5. Programming Model
● Service Based (Service oriented programming)
● Event Driven

6. Service Based Programming

7. Event Driven

8. Operational Model
● No server/infra to provision or manage
● Flexible Scaling (Auto Scaling)
● Pay only for usages
● Highly available and secure

9. Who is using Serverless ?

10. AWS Lambda
……..“AWS Lambda lets you run code without provisioning or managing
servers. You pay only for the compute time you consume.”

11. AWS Lambda - Pay per use pricing
● Pay for compute time in 100ms increment
● No hourly, daily or monthly minimum commitment or charges
● No per device cost
● Never pay for idle
1 Million requests are free every months for ever customer
More details on Pricing : https://aws.amazon.com/lambda/pricing/

12. So What AWS Lambda take care for you ? ...
● Load Balancing
● Auto Scaling
● Handling Failures
● Security Isolations
● OS Management
● Managing Resources Utilization
● Built-in Metrics / Logs

13. How AWS Lambda works ?

14. How AWS Lambda Work (Demo)

15. Lambda Execution Model

16. Event Source That Integrate with Lambda

17. Common use cases for serverless applications

18. Web-app using Serverless and AWS Lambda

19. Framework and Tooling

21. Resources
Sample Applications and Learning Resources:
● https://github.com/aws-samples/aws-serverless-workshops
● https://github.com/aws-samples/aws-serverless-chatbot-sample
● https://martinfowler.com/articles/serverless.html
● https://github.com/anaibol/awesome-serverless
● https://aws.amazon.com/tools/

22. https://www.linkedin.com/in/nishantkumar1/