How to configure Mikrotik GRE Tunnel for Site to Site VPN using IPSEC for encryption

I have share posts on how to configure PPPOE, IPSEC Tunnel, EoIP, L2TP, etc. Today, I am sharing with a demonstration on how to set up Generic Routing Encapsulation on Mikrotik, using IPSEC for encryption. This configuration is required for those that need to link up two branches of a company for seamless communication. The IPSEC encryption keeps the communication between both branches, over the public internet, secured and private. Its simple and straight forward.