The AWS Cloud Development Kit (AWS CDK) is a new open-source framework from AWS that enables developers to harness the full power of modern programming languages to define reusable cloud components and applications and provision them through AWS CloudFormation. The AWS CDK is shipped with a rich class library that encapsulates the details-defining infrastructure on AWS and enables you to focus on your application. In this session, we discuss why we decided to build the AWS CDK; we describe some of the high-level concepts; and we write some code on stage to demonstrate why we think the AWS CDK is going to be your best friend.

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Infrastructure Is Code
with the AWS Cloud Development Kit
Elad Ben-Israel
Principal Engineer
AWS Developer Tools
D E V 3 7 2
Jason Fulghum
Development Manager
AWS Developer Tools

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Agenda
• Our infrastructure management journey
• The AWS Cloud Development Kit (AWS CDK)
• Demo: Build an AWS CDK app
• A lot more to explore

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Manual
� Easy to get started
� Not reproducible
� Error prone
� Time consuming Manual
High
level
Low
level

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Scripted
� What happens if an API call fails?
� How do I make updates?
� How do I know a resource is ready?
� How do I roll back?
Scripted
Manual
High
level
Low
level

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Resource provisioning engines
AWS CloudFormation
template
(JSON/YAML)
HashiCorp Configuration
Language (HCL)
Desired state configuration
Declarative
Scripted
Manual
High
level
Low
level
� Easy to automate
� Reproducible
� Configuration syntax
� No abstraction, lots of details

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Document Object Models (DOMs)
Troposphere Python
SparkleFormation Ruby
GoFormation Go
…
if statements, for loops, IDE benefits
Ex: 218 lines of Troposphere for a VPC
AWS
CloudFormation
Template
� Real code ♥️
� Desired state
� Abstraction is not built-in
DOMs
Declarative
Scripted
Manual
High
level
Low
level

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Developer preview
AWS
CloudFormation
template
AWS CDK application
Stack(s)
Construct Construct
AWS CDK
Componentized
DOMs
Declarative
Scripted
Manual
High
level
Low
level
Resources

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AWS Construct Library
AWS CDK Developer preview
Componentized
DOMs
Declarative
Scripted
Manual
High
level
Low
level

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Componentized
DOMs
Declarative
Scripted
Manual
High
level
Low
level
AWS CDK Developer preview

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Demo – Goals
• CDK concepts
• CDK CLI workflow
• AWS construct library HelloCdkStack
event source
SQS Queue
New Tweets
CloudWatch
Logs
console.log
send-message

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Demo recap
Get started:
npm install -g aws-cdk
cdk init --language <typescript | java | csharp | ...>
CloudFormation
Template
“compiler”
CDK CLI
“processor”
“assembly
language”
“source”
synthesize deployexecutes

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Demo goals
• Thinking in constructs
• Permissions – Grant APIs
• Wiring runtime configuration
HelloCdkStack
SQS Queue
New Tweets
QueueRecorder
put-item
inputQueuesend-message

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Recap
• Thinking in constructs
• Permissions – Grant APIs
• Wiring runtime configuration
HelloCdkStack
SQS Queue
New Tweets
QueueRecorder
put-item
inputQueuesend-message

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HelloCdkStack
Tweet queue
Input Queue
put-item
SQS queue
new tweets
Amazon
Cloudwatch
scheduled event
polling schedule
DynamoDB
checkpoints table
trigger
update
checkpoint
send message
search?q=TEXT
Queue recorder
Demo goals

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HelloCdkStack
Tweet queue
input queue
put-item
SQS queue
new tweets
Amazon
Cloudwatch
scheduled event
polling schedule
DynamoDB
checkpoints table
trigger
update
checkpoint
send message
search?q=TEXT
Queue recorder
Recap

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AWS construct library
• Amazon Elastic Container Service
(Amazon ECS)
• AWS Lambda
• Amazon API Gateway
• Amazon Elastic Cloud Compute
(Amazon EC2)
• VPCs, security groups, Auto Scaling
• Amazon CloudWatch
• Metrics, alarms, dashboards
• AWS Step Functions
• AWS CodePipeline
• AWS Auto Scaling

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Multi-language support
Coming soon!

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Advanced topics
• Multi-stack and cross-region applications
• Declarative constructs with AWS CDK applets
• Working with the AWS CloudFormation DOM
• Embedding existing AWS CloudFormation templates
• Importing resources from other stacks
• Embedding code bundles, docker files, and others into constructs

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Next steps
• Try out the CDK
• https://cdkworkshop.com
• https://awslabs.github.io/aws-cdk
• https://github.com/awslabs/cdk-reinvent
• Engage with us
• https://github.com/awslabs/aws-cdk
• https://gitter.im/awslabs/aws-cdk
• Check out related sessions

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Other CDK sessions
DEV411: Infrastructure as Code: AWS Best Practices
Tuesday, Nov 27, 6:15 p.m. - 7:15 p.m. Aria West, Level 3, Starvine 2
Wednesday, Nov 28, 1:45 p.m. - 2:45 p.m. Mirage, Antigua B
Thursday, Nov 29, 12:15 p.m. - 1:15 p.m. Venetian, Level 2, Veronese 2402
DEV327: Beyond the Basics: Advanced Infrastructure as Code
Programming on AWS
Monday, Nov 26, 11:30 a.m. – 12:30 p.m. Aria East, Level 2, Mariposa 5
Thursday, Nov 29, 4:00 p.m. - 5:00 p.m. Aria West, Level 3, Ironwood 5
DEV309: CI/CD for Serverless and Containerized Applications
Tuesday, Nov 27, 7:00 p.m. - 8:00 p.m. Venetian, Level 2, Venetian E
Thursday, Nov 29, 2:30 p.m. - 3:30 p.m. Bellagio, Level 1, Grand Ballroom 2

31. Thank you!
© 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Elad Ben-Israel
@emeshbi
Jason Fulghum
@jason_fulghum

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