An SSL (Secure Sockets Layer) Certificate is a digital certificate that encrypts the communication between a user's browser and the server hosting a website. It ensures that sensitive data, such as login credentials and financial information, is transmitted securely.

An SSL Certificate is essential for securing the transfer of data between a user's browser and your website. It adds a layer of encryption, protecting sensitive information from potential attackers. Additionally, having an SSL Certificate improves your website's trustworthiness.

Look for "HTTPS" in the website URL and a padlock icon in the browser's address bar. These indicators confirm that the website is secured with an SSL Certificate.

While there may be a minimal impact on performance due to the encryption process, the benefits of improved security and user trust outweigh any potential drawbacks. Advances in technology have reduced the performance impact of SSL encryption.