The HTTPS (Hypertext Transfer Protocol Secure) protocol is a secure version of the HTTP protocol that encrypts data exchanged between a user and a web server. It uses an encryption system combining a public and a private key to guarantee the confidentiality, authenticity, and integrity of transmitted information. HTTPS activation is indicated by the presence of “https” in the URL and a padlock icon in the browser’s address bar, reinforcing user trust. This protocol is essential for securing online transactions, protecting personal data, and is an important factor in website ranking and credibility.