What is the key difference between HTTP and HTTPS?

The key difference between HTTP and HTTPS is that HTTPS uses encryption to secure communication between the client and the server. This means that data transmitted over HTTPS is encrypted using SSL/TLS protocols, which protects it from being intercepted and read by unauthorized parties. This level of security is crucial for any applications that handle sensitive information, such as online banking or e-commerce, where data confidentiality and integrity are paramount.

In contrast, HTTP transmits data in plain text, making it susceptible to eavesdropping and man-in-the-middle attacks. As a result, users should be aware that while HTTP may be suitable for non-sensitive data, HTTPS is essential for ensuring the security of transmitted information.