Deploy all resources in multiple AZ's (including the Load Balancers)
Deploy all resources to multiple availability zones to facilitative seamless failover.
Summary
AZ is one of the blast radius boundaries in AWS. With services in multiple AZ's failover is seamless or relatively easy. Watch out for az3 in us-East-1. It's commonly but not guaranteed to be us-East-1e. This AZ is not well kept
Applicable To
Always
Resources
EC2, RDS, *LB
Maturity
Medium
Functions
CSPS
AWS
Author
Houston Hopkins
Additional Links
