The document discusses serverless computing and AWS Lambda. It provides an overview of the current state of serverless, enterprise adoption trends, key AWS services and features for serverless applications, best practices for building serverless applications, challenges of serverless computing, and references for further reading. Major points include growth in serverless usage driven by cost savings and agility, examples of large companies using serverless architectures at scale, and the importance of services like API Gateway, Step Functions, and third-party tools for observability.

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VADODARA

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Mainstream Serverless
Dhaval Nagar | Founder @ APPGAMBIT
AWS Hero, AWS SME

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● Founder @ APPGAMBIT, AWS Consulting Partner
● 12x AWS Certified
● AWS Hero (since 2020)
● AWS Certification SME
● AWS Surat User Group Lead
● Practicing Barista
Dhaval Nagar

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Quick Poll
New to Serverless Familiar with Serverless Running Serverless in
Production

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Agenda
● Current State of Serverless
● Enterprise Adoption
● Services and Features
● How to Go Serverless
● 3rd party services and tools
● Hard things about Serverless

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A Simple Serverless Flow

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NodeJS
Python
Java
C#
Ruby
Go
Custom Runtime
Event Source Function Destination
API Requests
File Uploads
Resource Changes
Data State Changes
Datastore
or
Other Resources
{
“event”: “test”,
“data”: 9999
}

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Current state of Serverless
● AWS Lambda launched in re:invent 2014
● Initial Events Sources were
○ S3 Event Notifications
○ Kinesis Stream
○ DynamoDB Update Stream
● API Gateway released in 2015
● Over the years, Lambda, became the core of Serverless Ecosystem with exciting
features and services like Step Functions, EventBridge, AppSync, VPC and Container
Support, etc.
● McKinsey calls Serverless Infrastructure as Cloud 2.0

9. © 2022, Amazon Web Services, Inc. or its Affiliates. All rights reserved. https://www.datadoghq.com/state-of-serverless/ (June 2022)

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Lambda Fargate
ECS / EKS
App Runner
Serverless Compute is not limited
to Lambda Functions

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Enterprise Adoption

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● All 4 companies represent different category of business
● They all serve Millions of users
● They have adopted AWS Serverless architecture with services
like Lambda, Step Functions, API Gateway, DynamoDB, Kinesis
Stream, etc

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● All 4 companies represent different category of business
● They all serve Millions of users
● They have adopted AWS Serverless architecture with services
like Lambda, Step Functions, API Gateway, DynamoDB, Kinesis
Stream, etc
Lower Cost of Ownership Faster Time to Market Scale on Demand

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Serverless has demonstrated that it is the operational model of the
future. Over the past year, we’ve seen 125 percent growth in the
number of serverless function invocations on Vercel, fueled by
serverless-oriented frameworks like Next.js.
– Guillermo Rauch, CEO, Vercel

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● Ryan and Ant Stanley built online training platform in 2015, within a
few weeks
● His AWS Solution Architect Certification course got immensely
popular
● Sam joined the company from Microsoft
● Raised over $40 Million in next 4 years
● Acquired Linux Academy
● Acquired by Pluralsight with valuation of $2 Billion

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We don’t run a single server.
Sam Kroonenburg
CEO - A Cloud Guru
Oct 2015
https://medium.com/a-cloud-guru/come-hear-us-talk-about-serverless-architectures-on-aws-melbourne-dublin-london-a7615c8736a2

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Services and Features

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Before
Use Lambda, wherever possible.
Now
Avoid Lambda, wherever possible.

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● Core services have improved a lot in the past few years
● Steep increase in the adoption across all segments
● Enterprises see a huge value addition - Low Ops, Low Cost
● API Gateway, Step Functions, AppSync, EventBridge have direct integrations with
other AWS Services
● Reduce unnecessary Lambda functions and increase reliability
Critical Services and Features

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How to Go Serverless

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● Have baseline familiarity with core AWS Services
○ IAM, S3, VPC, and CloudFormation
● Serverless Framework is the easiest among the bunch
● Full-stack Developers with API Gateway and Lambda
● Generate JWT Tokens with Amazon Cognito
● Database with Aurora Serverless or DynamoDB
● Process decoupling with SQS/SNS
● Coordinate different Lambda functions and services with Step
Functions
● Use S3 for file storage and automation

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Dev to Prod

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● Local Testing vs Cloud Native Testing
○ LocalStack, SST
● Monitoring and Debugging
○ Lumigo, Datadog, Thundra
● Microservices and how to implement
○ Micro doesn’t mean small
○ Keep logical responsibilities separate
○ Communicate with abstraction
● Mono repos vs Multi Repos
○ Follow the team culture
● Deployment Pipeline
○ Automation always help
○ Use AWS Services like CodePipeline and CodeDeploy

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● Lambda with Container support
● Lambda with improved VPC support
● Step Functions with advanced integrations and functions
● EventBridge SaaS Partner like MongoDB Atlas, Github, Stripe and Twilio
● Improve User Experience with WebSocket/API Gateway or GraphQL AppSync
Subscriptions
Critical Services and Features

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● Fullstack Services - Vercel and Cloudflare
● Monitoring and Oberservability – DataDog, Lumigo, Epsagon, Thundra, IOPipes, etc
● Frameworks – Serverless Framework, AWS SAM, Serverless Stack (sst)
● Databases - MongoDB Atlas Serverless, CockroachDB Serverless, Upstash
Redis/Kafka, Momento Cache, etc
● Auth0 for Authentication
● Twilio for SMS and Calls
3rd Party Ecosystem

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Serverless is (still) Hard

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● Just knowing Lambda is NOT enough
● Unoptimised Lambda functions can result into cost overrun or bad user
experience
● Steep learning curve involved - if doing anything past the normal HTTP
requests or other patterns
● Requires good familiarity with AWS Services, CloudFormation or CDK
depending on the framework you choose
● Mono Repos vs Individual Repos will still be a question
● Familirity with Serverless Principles will still be required among the
team members

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x86 vs Arm

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● S3 Event Notifications to EventBridge unlocks advanced
integration with message filtering, routing, event retention and
event replays
● EventBridge supports events from GitHub, Stripe and Twilio
making it easier to build advanced external integrations

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Further References

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● https://serverless.com
● https://serverlessland.com/
● https://www.jeremydaly.com/
● https://theburningmonk.com/
● https://cdkpatterns.com/

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Thank You
https://www.linkedin.com/in/dhavaln/