SSL Certificates are small data files that digitally bind a cryptographic key to an organization’s details. When installed on a web server (or a web hosting account), it activates the padlock and the “https” protocol and allows secure connections from a web server to a browser.
The main reason why SSL is used is to keep sensitive information sent across the Internet encrypted so that only the intended recipient can access it. Credit cards and personal data are two of the most notable types of sensitive data that need an SSL certificate. This also applies to contact forms on your website, booking forms, etc.
Yes! In the past, it was acceptable for websites to not use an SSL, especially if it did not collect sensitive data from users. However, with today’s lastest browser notifications, all websites are required to have an SSL (HTTPS), otherwise, the website will show as unsecured (not secure) in all major browsers like Google Chrome, Safari, Firefox, etc.