This document discusses building .NET applications on AWS and provides alternatives to classic 3-tier web application architectures. It presents a sample serverless architecture using AWS services like Lambda, API Gateway, DynamoDB and S3. The document also covers AWS Well-Architected principles and compares a traditional 3-tier approach to more modern serverless designs that are highly scalable and use managed AWS resources.

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Building Well-Architected .NET
Applications on AWS
Nick Naddaf
Partner Solutions Architect
AWS
D E V 3 3 1 - R 1
Shahab Mohsen
Solutions Architect
AWS

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Agenda
AWS Well-Architected
Classic 3-Tier Web Application
A Modern Approach: What are the alternatives?
Sample Architecture
Q&A

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AWS Well-Architected

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Classis 3-Tier web application architecture
AWS Region (Canada – Montreal)
10.10.0.0/16
Availability Zone A Availability Zone B
Web Subnet A 10.10.1.0/24
Database Subnet A 10.10.5.0/24
Web Subnet B 10.10.2.0/24
Database Subnet B 10.10.6.0/24
Web Tier Security Group
Database Tier Security Group
Web
Server
Web
Server
Web
Server
Web
Server
ELB
Internet Gateway (IGW)
Web Tier Auto Scaling Group
App Subnet A 10.10.3.0/24 App Subnet B 10.10.4.0/24
App Tier Security Group
App
Server
App
Server
App
Server
App
Server
App Tier Auto Scaling Group
Synchronous Replication
ELB

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A modern approach: What are the alternatives?
Back end

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A modern approach: What are the alternatives?
Front End- Presentation Layer

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Sample serverless architecture
Amazon API
Gateway
AWS
Lambda
Amazon
DynamoDB
Amazon
ElastiCache
Amazon
S3
Web App
(instances)
Amazon
CloudFront
Amazon
S3
Static Web Site
mobile client

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Serverless architecture
Stateless
Highly scalable, self-healing, available
Containerized microservices
AWS serverless platform
• AWS Lambda
• AWS Step Functions
• Amazon API Gateway
• Amazon DynamoDB
• Amazon Simple Notification Service (Amazon SNS)
• Amazon MQ Simple Queue Service (Amazon SQS)
Dynamic/managed allocation of resources
Amazon Route 53 – DNS
C#
C#
C#
User/Client
Alexa
S3
HTTPS
REST
REST
REST
Wordflow
Steps
SQS
SNS
Wordflow
Steps
ElastiCache
RDS
DynamoDB
S3CloudFront
HTTP
Step FunctionsWorker Process
API Gateway
Instance
Workflow

10. Thank you!
© 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Shahab Mohsen Nick Naddaf
smohsen@amazon.com naddafn@amazon.com

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