The document discusses serverless patterns and architectures using AWS services. It provides examples of using services like AWS Lambda, Amazon S3, Amazon DynamoDB, Amazon API Gateway, AWS Step Functions and Amazon EventBridge to build serverless applications without having to manage servers. Five serverless patterns are described: 1) Using Amazon SES to trigger workflows from email, 2) Orchestrating workflows with AWS Step Functions, 3) Using AWS AppSync for a GraphQL API, 4) Transferring data with AWS Transfer Family, and 5) Event-driven architectures with Amazon EventBridge. The document emphasizes that serverless computing provides scalability and avoids server management overhead.

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Five incredible (and uncommon)
serverless patterns
David Victoria (he/him)
D E V 2 0 1
Emite Facturación
Chief Operating Officer

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No server is easier to
manage than no server
Dr. Werner Vogels
VP & CTO at Amazon.com

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Serverless is a qualifier that can be
applied to any software or service
offering, which requires that it is
consumed as a utility service and
incurs cost only when used.
Serverless Architecture on AWS, Second Edition
Peter Sbarski, Yan Cui, and Ajay Nair
Serverwhat!?

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I know . . . I know . . .
And the answer is: YES
There obviously are servers somewhere. The difference is that these
servers are hidden from (and not managed by) you.

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Serverless services on AWS
AWS Lambda

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Serverless services on AWS
AWS Lambda Amazon DynamoDB
Amazon API Gateway

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Serverless services on AWS
AWS Lambda Amazon S3
Amazon DynamoDB
Amazon API Gateway

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Serverless services on AWS (+20!)
AWS Lambda Amazon S3
Amazon DynamoDB
Amazon API Gateway
AWS Glue
Amazon Athena
Amazon Kinesis
Amazon SNS
Amazon SQS
AWS AppSync
AWS Step Functions
Amazon EventBridge
Amazon SES
AWS IoT Core
Amazon Comprehend
Amazon Forecast
Amazon Lex
AWS Elemental
MediaConvert
Amazon Macie
Amazon Personalize
AWS X-Ray

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Pattern 1: An email as the init
of all things: SES

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Key services
AWS Lambda
Amazon S3
Amazon SQS
Amazon SES
Amazon Simple Email Service (SES) is a cost-effective, flexible, and scalable email service
that enables developers to send (and receive) mail from within any application
Amazon Simple Storage Service (Amazon S3) is an object storage service offering
industry-leading scalability, data availability, security, and performance
Amazon Simple Queue Service (SQS) is a fully managed message queuing service that
enables you to decouple and scale microservices, distributed systems, and serverless
applications
AWS Lambda is a serverless, event-driven compute service that lets you run code for
virtually any type of application or backend service without provisioning or managing
servers

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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An email as the init of all things: SES

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Scenario: Ingesting SaaS reports to BI tools

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Use cases
• Connect legacy software to cloud serverless infrastructure
• Allow users to trigger actions in the cloud with a simple email
• Create SaaS data flow process solutions without complex integration
A N E M A I L A S T H E I N I T O F A L L T H I N G S : S E S

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Pattern 2: Orchestrating with
Step Functions

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AWS Step Functions
Key services
AWS Step Functions is a low-code, visual workflow service that developers use to build
distributed applications, automate IT and business processes, and build data and machine
learning pipelines using AWS services
Amazon Comprehend
Amazon Comprehend uses ML and natural language processing (NLP) to help you
uncover the insights and relationships in your unstructured data.
Amazon DynamoDB
Amazon DynamoDB is a fully managed, serverless, key-value NoSQL database designed
to run high-performance applications at any scale
Amazon SNS
Amazon Simple Notification Service (Amazon SNS) is a fully managed messaging service
for both application-to-application (A2A) and application-to-person (A2P)
communication

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Scenario: Sentiment analysis workflow

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Workflow definition

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Workflow studio design

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Use cases
• Orchestrate microservices in sync and async processes
• Integrate service-to-service call architecture
• Allow manual approvals in complex flows
• Invoke automatically complete business processes in response to an
event
O R C H E S T R A T I N G W I T H S T E P F U N C T I O N S

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Pattern 3: GraphQL, a different (and
serverless) API design approach

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Amazon Cognito
AWS AppSync
Key services
AWS AppSync is a serverless GraphQL and Pub/Sub API service that simplifies building
modern web and mobile applications
Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and
mobile apps quickly and easily

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Scenario: Mobile app backend

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Use cases
• Web/mobile API with unified data access
• Apps where bandwidth usage matters
• Composite pattern, where application retrieves data from multiple,
different APIs
G R A P H Q L , A D I F F E R E N T ( A N D S E R V E R L E S S ) A P I D E S I G N A P P R O A C H

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Pattern 4: Interchanging data
with a managed SFTP service

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Amazon Rekognition
AWS Elemental
MediaConvert
AWS Transfer Family
Key services
AWS Transfer Family is a secure transfer service that enables you to seamlessly migrate,
automate, and monitor your file transfer workflows into and out of Amazon S3 and
Amazon EFS using the SFTP, FTPS, and FTP protocols
AWS Elemental MediaConvert is a file-based video transcoding service with broadcast-
grade features. It allows you to easily create video-on-demand (VOD) content for
broadcast and multiscreen delivery at scale
Amazon Rekognition offers pre-trained and customizable computer vision (CV)
capabilities to extract information and insights from your images and videos

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Scenario: Video transfer and transcoding flow

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Use cases
• Modernize your managed file transfers
• Gain insights by growing your data lake
• Improve collaboration across your trading partner network
• Expand your content distribution business
I N T E R C H A N G I N G D A T A W I T H A M A N A G E D S F T P S E R V I C E

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Pattern 5: Event choreography
via EDA (Event-Driven Architecture)

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Key services
Amazon EventBridge is a serverless event bus that makes it easier to build event-driven
applications at scale using events generated from your applications, integrated Software-
as-a-Service (SaaS) applications, and AWS services. Amazon EventBridge will
automatically deliver the events in near-real-time
Amazon EventBridge
Amazon API Gateway
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.

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Event and pattern structure
{
"version": "0",
"id": "ad1de317-e409-eba2-9552-30113f8d88e3",
"detail-type": "Object Deleted",
"source": "aws.s3",
"account": "123456789012",
"time": "2021-11-12T00:00:00Z",
"region": "ca-central-1",
"resources": ["arn:aws:s3:::example-bucket"],
"detail": {
"version": "0",
"bucket": {
"name": "example-bucket"
},
"object": {
"key": "example-key",
"etag": "d41d8cd98f00b204e9800998ecf8427e“
},
"request-id": "20EB74C14654DC47",
"requester": "s3.amazonaws.com"
}
{
"source": ["aws.s3"],
"detail-type": ["Object Deleted"],
"detail": {
"bucket": {
"name": ["example-bucket"]
}
}
}

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Scenario: Online shopping workflow

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Use cases
• Deliver events to a service with a scheduled configuration
• Respond to custom events generated by an application
• Deliver events generated on the AWS infrastructure
• Extend functionality via SaaS integrations
E V E N T C H O R E O G R A P H Y V I A E D A

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Tip: X-Ray
F U L L S E R V E R L E S S O B S E R V A B I L I T Y T O O L

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Tip: Event Catalog
https://www.eventcatalog.dev/

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Do you think this is possible?
D E L E T E I N T E G R A T I N G F U N C T I O N S O N T H E F L Y

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Functionless
(or how to be serverless without Lambda functions)

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More less?
A functionless integration pattern is where a direct integration between two AWS
services is configured instead of using custom code in an intermediary Lambda
function.
If you use a direct service-to-service integration, you can expect these benefits:
• Lower Latency
• No Code rot
• Free (in terms of cloud bill)
• Even higher scalability
• Less IaC

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The functionless starter pack

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Last bonus: Serverlessland!
https://serverlessland.com/

80. Thank you!
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David Victoria
hi@davidvictoria.com
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