The overall architecture would be as follows.
HA Web App on EC2
- We increase website reliability by creating a highly available architecture that spans multiple Availability Zones with load balancing and health monitoring.
- Amazon Route 53 is used for DNS services.
- Amazon CloudFront, which is the AWS Content Dilivery Network service, is used to deliver static and dynamic content. CloudFront can cache frequently accessed content to decrease latency.
- Amazon Simple Storage Service (Amazon S3), which is an object storate service, is used to store static assets, such as images and video.
- Elastic Load Balancing is used to distribute traffic across multiple Availability Zones.
- Since the web app is running on Amazon EC2, Auto Scaling groups are deployed across avalability zones for redundancy. This creates groups of servers that grow or shrink in capacity, depending on demand, and can be directly integrated with Amazon CloudWatch, for metrics data, and with Elastic Load Balancing to add and remove hosts for load distribution.