Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. AWS Lambda is a compute service that runs your code in response to events and automatically manages the compute resources for you, making it easy to build applications that respond quickly to new information. Together they help you build a server-less event-driven backend that is easy to manage and scale.

1. Amazon API Gateway and AWS Lambda:
Better Together
Danilo Poccia
AWS Technical Evangelist
@danilop
danilop

2. You Want to Build
Your Brand New Application

3. Application
+
Data

4. Application
+
Data
Websites
Mobile
Apps
Wearable

5. Application Data
Websites
Mobile
Apps
Wearable

6. Application
Files
DB
Content +
Some API Calls
API Calls
Websites
Mobile
Apps
Wearable

7. Application
Files
DB
API Calls
Websites
(JavaScript
Apps)
Mobile
Apps
Wearable
JavaScript
API Calls

8. Application
Files
DB
API Calls
Websites
(JavaScript
Apps)
Mobile
Apps
Wearable
Services
API Calls
JavaScript
API Calls

9. Application
Files
DB
API Calls
Websites
(JavaScript
Apps)
Mobile
Apps
Wearable
Services
API Calls
JavaScript
Authentication
& Authorization
Caching &
Throttling
Business
Logic
API Calls

10. Application
DB
API Calls
Websites
(JavaScript
Apps)
Mobile
Apps
Wearable
Services
API Calls
JavaScript
Files
Amazon
S3
Amazon
DynamoDB
Authentication &
Authorization
Amazon
Cognito
Business Logic
AWS
Lambda
Caching & Throttling
Amazon API
GatewayAPI Calls

11. How Does It Works?

12. X
Authentication
Providers
End Users
User
Credentials
Authentication
Token
Amazon Cognito
Identity Broker
Identity Pool Id
(Token)
Identity Id
AWS Temp Credentials
(Depending on
Auth / Unauth Role)
Access to
AWS Services
(Including Amazon
API Gateway)
Identity Id
AWS Temp Credentials
Amazon S3
Amazon
DynamoDB
Amazon
Mobile Analytics
Amazon Cognito
Sync Store
K / V
Authentication &
Authorization
Amazon
CognitoCheck Token

13. X
End Users
User
Credentials
Authentication
Token
Amazon Cognito
Identity Broker
Identity Pool Id
(Token)
Identity Id
AWS Temp Credentials
(Depending on
Auth / Unauth Role)
Access to
AWS Services
(Including Amazon
API Gateway)
Identity Id
AWS Temp Credentials
Amazon S3
Amazon
DynamoDB
Amazon
Mobile Analytics
Amazon Cognito
Sync Store
K / V
Custom
Authentication
Service
Get Token
Token Authentication &
Authorization
Amazon
Cognito

14. Amazon
CloudFront
API Gateway
Cache
Amazon
CloudWatch
Monitoring & Logs
Endpoints on
Amazon EC2 or
AWS Elastic Beanstalk
Internet
Any other publicly
accessible endpoint
AWS Lambda
Functions
Caching & Throttling
Amazon API
Gateway
X
Access to
API Method

16. Managed Cache to Store API Responses
Reduced Latency and DDoS Protection through Amazon CloudFront
SDK Generation for iOS, Android and JavaScript
HTTP 429 Response for API Throttling (Managed by the SDK)
Swagger Support
Request / Response Data Transformation and API Mocking

17. Business Logic
AWS
Lambda
AWS Lambda
Functions
Amazon
API Gateway
Amazon S3
Amazon
DynamoDB
Amazon Cognito
Sync Store
K / VAmazon
SNS
Amazon
Kinesis
Alexa Skills Kit (ASK)
Alexa Voice Service (AVS)
HTTPS
Invoke
Custom
Events
HTTPS
REST
API Call

18. console.log('Loading function');
exports.handler = function(event, context) {
console.log('value1 =', event.key1);
console.log('value2 =', event.key2);
console.log('value3 =', event.key3);
// Echo back the first key value
context.succeed(event.key1);
// context.fail('Something went wrong');
};

19. Build Back-end Services that Perform at Scale
Respond Quickly to New Information
Run Your Code without Managing Infrastructure
Cost-effective and Efficient

20. Amazon API Gateway
+
AWS Lambda

21. Resource + HTTP Verb ➔ Method

22. Resource + HTTP Verb ➔ Method
/books + GET ➔ GetAllBooks

23. Resource + HTTP Verb ➔ Method
/books + GET ➔ GetAllBooks
/books + POST ➔ CreateNewBook

24. Resource + HTTP Verb ➔ Method
/books + GET ➔ GetAllBooks
/books + POST ➔ CreateNewBook
/books/{id} + GET ➔ GetBookById
/books/{id} + PUT ➔ CreateOrUpdateBookById
/books/{id} + DELETE ➔ DeleteBookById

25. Let’s Put Everything Together

26. Media Sharing Application

27. λ
λ λ
Amazon
API Gateway
λ
λ
λ
λ
Bucket Usage
Table
Media Metadata
Table
User Stat
Table
User
Location
Table
K / V
λ
λ
λ
Amazon Cognito
Identity Broker
Amazon Cognito
Sync Store
Amazon
SNS
Amazon
Kinesis
Media
Bucket
Log
Table
Authentication
&
Authorization
Upload Picture / VideoUpdate Bucket UsageCheck Bucket Usage
Delete
“Over Quota”
Media
Send Notification
to
User / Application
Extract Metadata and
Write on DB
Update
User Statistics
Call REST API
to Get
Media Description
Upload
Location Info
Update
User Location
Look for
Users or Media
Near Current Location
Call REST API
to Get
User Info
Sync
Media and User
Rating
Write
History of Changes
Check and Update
Ratings
Invoke
Read
Write / Send

28. λ
λ λ
λ
λ
λ
λ
λ
λ
λ

29. Microservice Architecture
λλ λλ
λλ λλ λ
λ

30. Focus on You Idea

31. aws.amazon.com/free

32. Amazon API Gateway and AWS Lambda:
Better Together
Danilo Poccia
AWS Technical Evangelist
@danilop
danilop