How to build a Highly Available environment on AWS

There are few important things to take care regarding High Availability.
  • Always, run your instances in 2 Availability Zone (that's minimum)
  • if you want 99.99% availability, then 2 AZ with in a region is enough. 
  • For 99.999% availability, AWS recommends implementing your infrastructure in 2 regions. 
We have talked about the usage of Route53 in detail in the following video.

Route53 supports 5 types of routing:
  1. Simple routing 
  2. Weighted round robin 
  3. Latency-based routing 
  4. Health check and DNS failover 
  5. Geo-location routing 

Selected videos!