Why does my website need an SSL Certificate?
SSL certificates keep online interactions private even though they travel across the public Internet, and they help customers gain the confidence to provide personal information on your website. If you ask users of your website to sign in, enter personal data such as credit card numbers, or view confidential information such as health benefits or financial accounts, you need to keep the data private. You also need to assure them that your website is authentic.
SSL is also used for email servers, Web-based applications, server-to-server communications and more.