How to deploy an application on AWS in multi-region? List the best practices.

 Hi There, My name is Anand Mohan. I'm a Software Engineer working at HeaTRec Solutions Pvt. Ltd. As I'm a tech Enthusiast always Try to learn new things and also wanna share with you guys. 

Today I'm going to share you guys How to deploy an Application on AWS in Multi region? It would be a great learning for me as well as you guys. I gonna cover this topic from Various approaches . 

What is Fault Tolerance ?

Fault tolerance is the ability of a workload to remain operational with zero downtime or data loss in the event of a disruption. In a fault-tolerance environment, instances of the same workload are typically hosted on two or more independent sets of servers .

What is AWS KMS( Key Management Service ) - 

Use AWS KMS ( Key Management Service ) to encrypt data across your AWS workloads, digitally sign data, encrypt within your appliocations using AWS Encryption SDK, and generate and verify message authentication codes ( MACs) .

Note - Its MACS ( Message Authentication Code ) - 

MAC Address - A MAC Address  ( Media Access control Address ) is a 12 -digit hexadecimal number assigned to each device connected to the network. Primarily specified as a unique identifier during device manufacturing, the MAC  Address is often found on a device's network interface card(NIC)