AWS_Infrastructure_at_Scale

In this project, We will plan, design, provision, and monitor infrastructure in AWS using industry-standard and open source tools.

Task 1: Create AWS Architecture Schematics

Part 1

This section is to plan and provision a cost-effective AWS infrastructure for a new social media application development project for 50,000 single-region users.

To ensure High-Availability, We have added:

An application load balancer in front of an Auto-Scaling group of multi-AZ EC2 instances to ensure auto failover and support in case of single AZ outage.

To ensure High-Performance, We have added:

A cross-region Read Replica of RDS to serve the read traffic from the AWS region close to the users
A CloudFront distribution connected to a S3 bucket that host a static website to the delivery of content at high speed through edge locations.

To ensure Security, We have added:

A RDS inside private subnets so that it only allows traffic from the load balancers.
A NAT gateway so that it only allows egress traffic from the private subnet database to download updates and patches.

Part 2

This section is to plan a SERVERLESS architecture schematic for a new application development project.

A Serverless architecture is recommended when we don't know the traffic we are expecting for an application and also it provides cost-efficiency as we are not provisioning any infrastructure of our own. While designing, we have placed an API Gateway in front of Lambda functions to have a pay per invocation instead of provisioning resources. We have also added Amazon Cognito to manage users.

Task 2: Calculate Infrastructure Costs

We have calculated the cost on AWS calculator based on the provided scenarios and placed them under Task2 folder (updated)

Task 3: Configure Permissions

Update the AWS password policy

Task 4: Set up Cost Monitoring

We have configured CloudWatch billing alarm with a $5 threshold and set up notification to get an email alert when the alarm is triggered by the service