Jumpstart your idea with AWS Serverless [Oct 2020]

This presentation highlights how to use AWS and Serverless ecosystem services to convert Idea into production-ready application.

1. Jumpstart your idea with
AWS Serverless
Dhaval Nagar
AWS Serverless Hero, 12x AWS Certified

2. ●12x AWS, 2x GCP, Docker, Kubernetes Developer Certified
●AWS Community Leader, Surat
●CEO - AppGambit (AWS Consulting Partner)
●AWS Serverless Hero

3. Level 100
Introductory Level

4. Before you start your application
●Programming Language
○JavaScript, Python, Ruby, PHP
●Framework
○NodeJS, Django, Rails, Laravel
●Application Type
○Web Application
○Mobile Application Backend
○Headless Data Processing Application
●Where will you run it!
○Virtual Machine!!
○or other options?

5. Structure of a
Traditional Application

6. Application Structure

7. When everything is RUNNING

8. When something FAILS

9. When MANY users access

10. No User Requests

11. Monolithic Application

12. Overall it needs these...
●Fixed infrastructure in place
●Code/Processes are running 24x7
●Even if we are not doing anything we still need to pay by keeping the
infrastructure running
●Does not Scale to demand by default

13. Building Blocks of a Backend Application
●Authentication
●Compute
●Database
●Storage
●Security
●High Availability
●Performance Efficient
●Fault Tolerant
●Auto Scaling
●Cost Efficient

14. Building Blocks of an Application
●Authentication
○User Login
○Authorization
■Public URLs vs Private/Protected URLs
○Roles or Groups
■Normal User vs Admin Users
●Compute
○APIs
○Background Jobs (Scheduled vs Event)
●Database
○Relational
■MySQL, Postgres, MS SQL, Oracle
○NoSQL
■MongoDB, DynamoDB
●Storage
○Application Files, User Files

15. Let’s Look at a
Modern Application

16. Using Software-as-a-Service(s) to Build Application

17. Imagine Serverless!

18. Microservices Architecture

19. Why Serverless!
●FOCUS on business logic
●Cloud provider MANAGES the infrastructure, availability, scalability, and
security
●Pay for what you CONSUME

20. One of the most important papers published for
Serverless Computing

Cloud Programming Simplified:
A Berkeley View on Serverless Computing (Feb, 2019)
https://www2.eecs.berkeley.edu/Pubs/TechRpts/2019/EECS-2019-3.pdf

21. WRITE LESS CODE!!
●Don’t REINVENT the WHEEL
●Use RIGHT SERVICE for RIGHT USE CASE
●LESS TIME spent on building same repititive tasks, MORE TIME spent on the
application features
●LESS CODE means LESS OPERATIONAL OVERHEAD
●OFFLOAD HEAVY LIFTING to purpose-built services

22. AWS Serverless Services
●Compute
○Lambda, Lambda@Edge
○Fargate
●Storage
○S3
○EFS
●Databases
○DynamoDB
○Aurora, RDS Proxy
●Proxy
○API Gateway
●Integration
○SQS, SNS
○EventBridge
○AppSync
●Orchestration
○Step Functions
●Analytics
○Kinesis
○Athena
●Communication
○Pinpoint
○Simple Email Service
○Simple Notification Service
●Developer Tools
○SAM
○X-Ray, CloudWatch
○CodeBuild, CodeDeploy, CodePipeline
○Cloud9 IDE

23. AWS Serverless Services

24. AWS Billing and Budget
●Take CARE of your AWS Account
●AWS Services are not FREE
●Each Service has different COST meter
●Make sure to configure proper Budget and Billing Alerts for your account
●This practice will help you FOREVER in your professional career

25. Service Cost Meter
Service Type Count Cost
API Gateway REST Requests 1 Million $3.50
HTTP Request 1 Million $1
Lambda Request 1 Million $0.20
Duration every GB-second $0.0000166667
SQS Standard Queue 1 Million Request
Every SQS action = 1 Request
Data Transfer In/Out separate
$0.40
DynamoDB On-Demand Read 1 Million $0.285
On-Demand Write 1 Million
Data Storage separate
Data Transfer In/Out separate
$1.4231
The cost after the AWS Free Tier Limits https://aws.amazon.com/free

26. Amazon S3 (Storage)
●Object Storage (this is different from file storage)
●No Provisioning Required, with Unlimited Data
●Accessible from URLs
●Pay for usage (storage and queries)
●Different Storage Tiers to optimize storage cost
○Standard
○Intelligent
○Infrequent
○And more...
●Highly Durable
●Highly Secure (if you configure it properly)
●Supports Web Hosting (this of Angular, React, Vue.js or Bootstrap based
FE)

27. Amazon Cognito (Authentication)
●User Management
●Secure and Scalable User Directory
●Social Media and Enterprise Directory Integration
●OAuth2.0 and OIDC Support
●EASY to Integrate

28. AWS Lambda (Compute)
●Serverless Compute Service
●Package and Upload your code with runtime configuration like
Memory and Concurrent requests
●Lambda runs the code on EVENTS (HTTP or Message in Queue)
●Lambda SCALES automatically
●Lambda is SECURE by default (ingress)
●Microservices-based implementation
●Least Operational Load (you can’t go inside Lambda)
●PAY ONLY WHEN IT RUNS (No events, no Consumption)

29. Amazon CloudWatch Logs & X-Ray
●Logging is VERY IMPORTANT
●CloudWatch is the DEFAULT logging service for Lambda
●Creates Metrics for different events
○Function Invocations
○Concurrent Function Executions
○Function Success vs Failure
○Function Execution Duration

30. AWS X-Ray - Service Map

31. AWS X-Ray - Traces

32. Amazon API Gateway (API Proxy)
●Serverless Gateway for APIs
●Highly Scalable
●Highly Secure (configurable)
●Various Integration Options
○Lambda
○SQS
○Step Functions
○Other AWS Services
○And even another HTTP Service
●Supports Different Types
○REST
○HTTP
○WebSocket

33. Amazon DynamoDB (Database)
●Serverless NoSQL Database
●Not your NORMAL Database
●DynamoDB has TABLES vs DATABASE
●User can perform READ and WRITE into TABLES
●Uses the PARTITION technique to SAVE Data
●Meant for HIGH SPEED, READ/WRITE operations
●Serverless In Nature, NO CONNECTION POOLING REQUIRED
●EVERY read and write COSTS, PAY-PER-USE

34. Aurora Serverless / RDS Proxy
●Not every application can use NoSQL Database like DynamoDB.
●Aurora Serverless is a Full Relational Database and SERVERLESS.
●Database starts when User Query comes (so it takes time).
●Meant for low usage applications where DB does not require to be running
forever.
●MySQL and Postgres are currently supported options in Aurora Serverless.
●If you use the regular RDS database from VPC, your code will need to
manage the Connections with MySQL or Postgres.
●RDS Proxy is a DATABASE CONNECTION MANAGEMENT Service.
●Lambda functions can use the RDS Proxy to connect with RDS Database
instead of creating and managing connections directly from the code.

35. Demo App - Simple API Service
●Serverless Framework with NodeJS
●API Gateway with Lambda

36. Demo - Serverless Bot using Web, SMS and Calls
●Works using Web page, SMS messages or Phone Calls (only in US)
●Scalable, Secure
●No Database Required
https://appgambit.gitbook.io/multi-model-aws-bot/

37. Keep Experimenting
●In Serverless environment, everything is distributed and asynchronous
●Serverless landscape is evolving rapidly, lot of opportunity to refactor and
optimize


Our understanding of how and when to use Serverless
architectures is still in its infancy. We’re starting to see patterns
of recommended practice occur, and this knowledge will only grow.

Martin Fowler
https://sls.dashbird.io/en/serverless-best-practices

38. Free Serverless Training Resources
●AWS Digital Training -
https://www.aws.training/Details/eLearning?id=42594
●Serverless Framework Free Courses -
https://www.serverless.com/learn/
●AWS Cloud Practitioner -
https://www.udemy.com/course/free-aws-certified-cloud-practiti
oner/

39. Q / A

40. Where to go from here
●AWS Well-Architected Framework for Serverless Applications
○https://aws.amazon.com/blogs/aws/new-serverless-lens-in-aws-well-architected-tool/
●AWS Heroes
○Yan Cui - https://theburningmonk.com/
○Jeremy Daly - https://jeremydaly.com/
○James Beswick (Serverless Developer Advocate, AWS)
■https://aws.amazon.com/blogs/compute/author/jbeswick/
●AWS Blogs for Serverless
○https://aws.amazon.com/blogs/compute/tag/serverless/
●Serverless Framework
○https://serverless.com/
●Serverless Application Model
○https://aws.amazon.com/serverless/sam/

41. The Hackathon Participants will receive the
AWS Voucher of $20

42. Thank You!
https://linkedin.com/in/dhavaln
https://medium.com/@dhaval
https://aws.amazon.com/developer/community/heroes/dhaval-nagar/

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