To create an SSL connection, a Web server requires a , which is an electronic document that confirms the identity of a website or server and verifies that a public key belongs to a trustworthy individual or company.

SSL Certificate

Explanation:

SSL Certificates tells whether a website is trusted or not, using a key that is identified. This electronic document indicates to the user whether the website  is safe for a sensitive transaction. This is very important because users data needs to be secured, and a safe connection needs to be ensured from the server to the browser.