The main reason to use SSL is to encrypt and secure sensitive information sent over the Internet, so only the recipient who is intended can have access to it while making it unreadable to any third-party in-between. As any information sent over the internet passes through various computers before reaching its destination server, ultimately making your sent information such as credit card details, login credentials vulnerable to attacks, if it’s not encrypted with an SSL certificate. Additionally, SSL is important because it provides:
Authentication: Provides surety that the information is sent to the right server and not any fraudster who is trying to steal data.
Trust: Visual trust indicators such as a green bar or a lock icon are displayed on the popular web browsers like Google Chrome or Mozilla Firefox, letting your website visitors know about your genuineness.
PCI Compliance: Pass the audits and satisfy the requirement of the Payment Card Industry (PCI) standards, which are needed for any website which accepts credit card details.