Speaker: Arthi Jaganathan, Solutions Architect, ASEAN, AWS AWS Lambda and Amazon API Gateway have changed how developers build and run their applications or services. While building simple, individual serverless functions is easy, what are the best practices when your entire application is serverless?  How should we go about tasks such as deployment, monitoring, and debugging in a serverless world? In this session, we'll dive into best practices that serverless developers can use for application lifecycle management, CI/CD, monitoring, and diagnostics.

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The Serverless Lifecycle
Development and Operations Best Practices
Arthi Jaganathan
Solutions Architect
Amazon Web Services

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Why are we
here today?

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What is serverless?
No infrastructure provisioning,
no management
Automatic scaling
Pay for value Highly available and secure

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Build your application
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Development lifecycle
Discover
Proto-
type
Learn
Test
DebugAuthor
Diagnose
OperateMonitor
Use-case Deploy

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Learn, discover, prototype
Desired Goal:
Understand what this “Serverless”
thing is.
Use the AWS console!
Discover
Proto-
type
Learn

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Author, test, debug
Desired Goals:
• Fast feedback loop
• Integration with IDE
• Step through and debug
• Ease of testing “locally”
• Get changes to production
Test
DebugAuthor

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Author, test, debug
Code
Application
API
Gateway
Fargate
task
Lambda
function
DynamoDB
S3
Bucket
Author

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Start with a framework
AWS
Chalice
AWS Amplify
AWS
SAM
AWS: Third-party:
Serverless
Framework

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Meet
SAM!

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Serverless Application Model
AWS::Serverless::Function
AWS::Serverless::SimpleTable
AWS::Serverless::Api
SAM Template
AWS
CloudFormation
Lambda
Function
DynamoDB
Table
API
Gateway

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AWS Cloud9

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DEMO!
AWS Toolkit for Visual Studio Code

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Building an API backend
S3 Bucket
Amazon
Elasticsearch
Service
Amazon API
Gateway
API Lambda DynamoDB
Table
Async processing
Lambda

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Async processing
Async processing
Lambda
DynamoDB
Table
Amazon Simple
Notification
Service
Queue
DLQ Alarm Notification
Lambda
Queue
DLQ Alarm Notification
Lambda
Data processing
Lambda
S3 Bucket
Elasticsearch
Slack
Slack
Topic
Topic

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Launched via AWS Serverless
Application Repository
parent
relationship
”nested” Serverless
Application Stack
”root”
Serverless
Application
Stack
”nested” Serverless
Application Stack
”nested” Serverless
Application Stack
Nested applications
AWS Serverless
Application
Repository

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Nested applications with SAR
AWS::Serverless::Function AWS::SQS::Queue
SAM Template
AWS::Serverless::Application

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AWS::Serverless::Function
AWS::Serverless::Application
AWS::SQS::Queue
SAM Template
AWS::CloudWatch::Alarm AWS::SNS::Topic
Nested App Template
Nested applications with SAR
AWS::Serverless::Function

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AWS::Serverless::Function
AWS::Serverless::Application
AWS::SQS::Queue
SAM Template
AWS::CloudWatch::Alarm AWS::SNS::Topic
Nested App Template
Nested applications with SAR
AWS::Serverless::Function
Root Stack
AWS
CloudFormation
Nested Stack
Alarm Notification
Lambda
Topic
QueueData processing
Lambda

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Demo
Queue
DLQ Alarm Notification
Lambda
Data processing
Lambda
Slack
Topic
Asana
DLQ Notifier
S3 Bucket

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DEMO!
SAR and nested application

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Security is integral

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Security in the cloud
Incident
response
Identity Detective
control
Infrastructure
security
Data
protection

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Lambda Layers
Lets functions easily share code: Upload layer
once, reference within any function
Promote separation of responsibilities, lets
developers iterate faster on writing business logic
Built in support for secure sharing by ecosystem

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DEMO!
Protego AWS Lambda layer

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Monitor, diagnose, operate
Desired Goals:
• Understand application status,
performance and business metrics
• Quickly diagnose root cause of
errors
• Permissions issue?
• AWS limit issue?
• Trigger configured incorrectly?
• Packaging issue?
• Logic issue?
• AWS service issue?
Diagnose
OperateMonitor

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AWS CI/CD Tools
AWS CodeBuild +
Third Party
AWS CodeCommit AWS CodeBuild AWS CodeDeploy AWS X-Ray
Source Build Test Deploy Monitor
AWS CodePipeline

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Deploying your
applications
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Safe deployments baked into SAM!
Version – immutable deployment unit
Alias – pointer to a version
Lambda Function Foo:
Alias “Live”
- Version 5
- Version 6- Version 710%
90%

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DEMO!
Safe deployment

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Can’t move fast if you
can’t measure what's
going on.

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Logging and monitoring
Amazon CloudWatch
• Ingest cost
• Storage cost
• Data scanned for log insights
Partner solutions
• Data transfer cost
Amazon S3
Amazon
CloudWatch
Amazon
Elasticsearch
Service

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How do you evaluate the architecture?
AWS Well Architected Framework – Serverless application lens

35. Thank you!
S U M M I T © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Arthi Jaganathan
jagaarth@amazon.com