The two types of communication on the web are given below.
1. Client to Web server communication:
This communication is carried out between client to the web server (shopping site). The technology used to protect data that are transferred from client to web server is https.
2. Web sever to web server communication:
This communication is usually carried out between web .sever (seller) to another web server (normally bank). For the safe transaction. Digital certificate issued by third party web sites are used.