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AWS Serverless per startup
come innovare senza preoccuparsi dei server
Fausto Palma
Solution Architect
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
2
What do we mean when we say serverless?
2. Flexible, automated scaling
scales by unit of work/consumption
rather than by server unit
1. No server management
no servers to provision, operate,
patch, etc.
3. Automated high availability
no need to architect for availability
because it is built into the service
4. Pay for value
you only pay for unit of work that
creates value rather than by server time
It is the running your application with your custom code …
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
3
AWS
Lambda
AWS
Fargate
Amazon
API Gateway
Amazon
SNS
Amazon
SQS
AWS
Step Functions
COMPUTE
DATA STORES
INTEGRATION
AWS
AppSync
Amazon Aurora
Serverless
Amazon
S3
Amazon
DynamoDB
Amazon
EventBridge
Serverless stack
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
4
Lambda service
Node.js
Python
Java
C#
Go
Ruby
Runtime API
Downstream servicesEvent source
Changes in
data state
Requests from
endpoints
Changes in
Resource state
Function
Lambda service
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
5
Lambda Execution Models
Synchronous Stream
Downstream
services
response
Asynchronous
Retry 1x-3x Downstream
services
destination
Event
source
Event
source
Downstream
services
destination
pointer
stream
Event
source
Retry until
expired
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
6
AWS
Lambda
AWS
Fargate
Amazon
API Gateway
Amazon
SNS
Amazon
SQS
AWS
Step Functions
COMPUTE
DATA STORES
INTEGRATION
AWS
AppSync
Amazon Aurora
Serverless
Amazon
S3
Amazon
DynamoDB
Amazon
EventBridge
Serverless stack
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
7
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
API Gateway
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
8
Types of APIs: Supported Protocol Details
RESTful: HTTP APIs or REST APIs Two way: WebSocket APIs
Client Client
• Request / Response
• HTTP Methods like GET, POST, etc
• Short-lived communication
• Stateless
• 2 way communication channel
• Serverless WebSocket
• Long-lived communication
• Stateful
request
response
Two way communication channel
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
9
API Architecture
Websites
Services
Amazon API Gateway
API Gateway Cache
(REST only)
Public
Endpoints on
Amazon EC2
Amazon
CloudWatch
Monitoring
All publicly accessible
endpoints
Lambda
Functions
Endpoints
in VPC
Applications
& Services
in VPC
Any other AWS
service
Fully-managed
CloudFront
Distribution
Edge-OptimizedRegionalPrivate
Applications
& Services
in the same
AWS Region AWS Direct
Connect
On-premises
HTTPS
Mobile client
Customer-managed
CloudFront Distribution
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
10
Types of APIs
Edge-Optimized (Available with REST APIs)
• Uses CloudFront to reduce TLS
connection overhead (reduces roundtrip
time)
• Designed for a globally distributed
clients
Regional (Available with all types)
• Recommended API type for
general use cases
• Designed for building APIs for
clients in the same region
Private (Available with REST APIs)
• Only accessible from within VPC
(and networks connected to VPC)
• Designed for building APIs used
internally or by private
microservices
RESTful APIs
HTTP APIs are the cheapest, fastest, best choice for
building APIs that only require API proxy functionality.
For APIs that require API proxy functionality and
management features in a single solution, API Gateway
also offers REST APIs.
WebSocket APIs
WebSocket APIs allow you to build real-time two-way
communication applications, such as chat apps and
streaming dashboards. API Gateway maintains a
persistent connection to handle message transfer
between a backend service and its clients.
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
11
API Security
• IAM Permissions for REST APIs & WebSocket
APIs
Use IAM policies and AWS credentials to
grant users access to APIs
• Lambda Authorizers for REST APIs &
WebSocket APIs
Use Lambda to validate a bearer token
(OAuth or SAML as examples) or request
parameters and grant access
• Cognito User Pools for all RESTful APIs
Create a completely managed user
management system
API Gateway offers several
mechanisms for adding
Authn/Authz to APIs.
All APIs from API Gateway
come with industry standard
security features such as
Native OIDC and OAuth2.
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
12
Infrastructure as code
AWS CloudFormation
AWS AmplifyAWS SAM AWS CDK
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
13
Example CDK code to create a simple module
https://github.com/aws-samples/aws-cdk-
examples/tree/master/python/api-sqs-lambda
Amazon API Gateway
Queue
AWS Lambda
cdk init Creates a new CDK project in
the current directory from a
specified template
cdk deploy Deploys the specified stack(s)
cdk destroy Destroys the specified stack(s)
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
14
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
Microservices
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
15
Microservices vs monolith applications
Each microservice does one
thing and stores its own data
Microservices
The monolith does
everything and uses a
single data source
Monolith
Messages and events
are the connection
between microservices
…
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
16
monolithic application
+ teams
2001
Lesson learned: decompose for agility
2002
microservices
Development transformation at Amazon
2 pizza teams
Full ownership & autonomy
You build it, you run it
DevOps – small, nimble teams
Focused innovation
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
17
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
AWS Training & Certifications
© 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark
18
AWS Training & Certification
https://www.aws.training: Free on-demand courses to help you build new cloud skills
e-Learning: Architecting Serverless Solutions
https://www.aws.training/Details/eLearning?id=42594
e-Learning: Getting into the Serverless Mindset
https://www.aws.training/Details/eLearning?id=27198
e-learning: Introduction to Serverless Development
https://www.aws.training/Details/eLearning?id=27074
e-learning: AWS Lambda Foundations
https://www.aws.training/Details/eLearning?id=27197
For more info on AWS T&C visit: https://aws.amazon.com/it/training/
Video: Introduction to Amazon API Gateway
https://www.aws.training/Details/Video?id=16452
e-learning: Amazon API Gateway for Serverless Applications
https://www.aws.training/Details/eLearning?id=27199
e-learning: Amazon DynamoDB for Serverless Architectures
https://www.aws.training/Details/eLearning?id=27196
Video: Serverless Analytics
https://www.aws.training/Details/Video?id=26848
Thanks!

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AWS Serverless per startup: come innovare senza preoccuparsi dei server

  • 1. AWS Serverless per startup come innovare senza preoccuparsi dei server Fausto Palma Solution Architect
  • 2. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 2 What do we mean when we say serverless? 2. Flexible, automated scaling scales by unit of work/consumption rather than by server unit 1. No server management no servers to provision, operate, patch, etc. 3. Automated high availability no need to architect for availability because it is built into the service 4. Pay for value you only pay for unit of work that creates value rather than by server time It is the running your application with your custom code …
  • 3. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 3 AWS Lambda AWS Fargate Amazon API Gateway Amazon SNS Amazon SQS AWS Step Functions COMPUTE DATA STORES INTEGRATION AWS AppSync Amazon Aurora Serverless Amazon S3 Amazon DynamoDB Amazon EventBridge Serverless stack
  • 4. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 4 Lambda service Node.js Python Java C# Go Ruby Runtime API Downstream servicesEvent source Changes in data state Requests from endpoints Changes in Resource state Function Lambda service
  • 5. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 5 Lambda Execution Models Synchronous Stream Downstream services response Asynchronous Retry 1x-3x Downstream services destination Event source Event source Downstream services destination pointer stream Event source Retry until expired
  • 6. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 6 AWS Lambda AWS Fargate Amazon API Gateway Amazon SNS Amazon SQS AWS Step Functions COMPUTE DATA STORES INTEGRATION AWS AppSync Amazon Aurora Serverless Amazon S3 Amazon DynamoDB Amazon EventBridge Serverless stack
  • 7. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 7 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark API Gateway
  • 8. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 8 Types of APIs: Supported Protocol Details RESTful: HTTP APIs or REST APIs Two way: WebSocket APIs Client Client • Request / Response • HTTP Methods like GET, POST, etc • Short-lived communication • Stateless • 2 way communication channel • Serverless WebSocket • Long-lived communication • Stateful request response Two way communication channel
  • 9. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 9 API Architecture Websites Services Amazon API Gateway API Gateway Cache (REST only) Public Endpoints on Amazon EC2 Amazon CloudWatch Monitoring All publicly accessible endpoints Lambda Functions Endpoints in VPC Applications & Services in VPC Any other AWS service Fully-managed CloudFront Distribution Edge-OptimizedRegionalPrivate Applications & Services in the same AWS Region AWS Direct Connect On-premises HTTPS Mobile client Customer-managed CloudFront Distribution
  • 10. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 10 Types of APIs Edge-Optimized (Available with REST APIs) • Uses CloudFront to reduce TLS connection overhead (reduces roundtrip time) • Designed for a globally distributed clients Regional (Available with all types) • Recommended API type for general use cases • Designed for building APIs for clients in the same region Private (Available with REST APIs) • Only accessible from within VPC (and networks connected to VPC) • Designed for building APIs used internally or by private microservices RESTful APIs HTTP APIs are the cheapest, fastest, best choice for building APIs that only require API proxy functionality. For APIs that require API proxy functionality and management features in a single solution, API Gateway also offers REST APIs. WebSocket APIs WebSocket APIs allow you to build real-time two-way communication applications, such as chat apps and streaming dashboards. API Gateway maintains a persistent connection to handle message transfer between a backend service and its clients.
  • 11. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 11 API Security • IAM Permissions for REST APIs & WebSocket APIs Use IAM policies and AWS credentials to grant users access to APIs • Lambda Authorizers for REST APIs & WebSocket APIs Use Lambda to validate a bearer token (OAuth or SAML as examples) or request parameters and grant access • Cognito User Pools for all RESTful APIs Create a completely managed user management system API Gateway offers several mechanisms for adding Authn/Authz to APIs. All APIs from API Gateway come with industry standard security features such as Native OIDC and OAuth2.
  • 12. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 12 Infrastructure as code AWS CloudFormation AWS AmplifyAWS SAM AWS CDK
  • 13. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 13 Example CDK code to create a simple module https://github.com/aws-samples/aws-cdk- examples/tree/master/python/api-sqs-lambda Amazon API Gateway Queue AWS Lambda cdk init Creates a new CDK project in the current directory from a specified template cdk deploy Deploys the specified stack(s) cdk destroy Destroys the specified stack(s)
  • 14. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 14 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark Microservices
  • 15. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 15 Microservices vs monolith applications Each microservice does one thing and stores its own data Microservices The monolith does everything and uses a single data source Monolith Messages and events are the connection between microservices …
  • 16. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 16 monolithic application + teams 2001 Lesson learned: decompose for agility 2002 microservices Development transformation at Amazon 2 pizza teams Full ownership & autonomy You build it, you run it DevOps – small, nimble teams Focused innovation
  • 17. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 17 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark AWS Training & Certifications
  • 18. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 18 AWS Training & Certification https://www.aws.training: Free on-demand courses to help you build new cloud skills e-Learning: Architecting Serverless Solutions https://www.aws.training/Details/eLearning?id=42594 e-Learning: Getting into the Serverless Mindset https://www.aws.training/Details/eLearning?id=27198 e-learning: Introduction to Serverless Development https://www.aws.training/Details/eLearning?id=27074 e-learning: AWS Lambda Foundations https://www.aws.training/Details/eLearning?id=27197 For more info on AWS T&C visit: https://aws.amazon.com/it/training/ Video: Introduction to Amazon API Gateway https://www.aws.training/Details/Video?id=16452 e-learning: Amazon API Gateway for Serverless Applications https://www.aws.training/Details/eLearning?id=27199 e-learning: Amazon DynamoDB for Serverless Architectures https://www.aws.training/Details/eLearning?id=27196 Video: Serverless Analytics https://www.aws.training/Details/Video?id=26848