HTTPS (Hypertext Transfer Protocol Secure) is a protocol for secure communication over the internet. It is an extension of the HTTP protocol with added encryption and enhanced security measures to provide secure and private communication between a web server and a web browser. HTTPS uses SSL/TLS (Secure Socket Layer/Transport Layer Security) encryption to protect sensitive information, such as login credentials, financial details, and personal data. It is commonly used to secure online transactions and protect sensitive data transmission, such as online banking, e-commerce, and email communication.