HTTPS stands for HyperText Transfer Protocol Secure, and it significantly improves web security by encrypting data exchanged between a user's browser and a website. This encryption protects sensitive information, such as personal details and payment information, from being intercepted by malicious actors during transmission. HTTPS utilizes SSL/TLS protocols to establish a secure connection, ensuring data integrity and confidentiality. Users are alerted to secure connections through visual indicators like a padlock icon in browsers, fostering trust. By implementing HTTPS, websites enhance user safety and comply with evolving security standards, promoting safer online browsing experiences.