*HTTP vs HTTPS:*

- *HTTP*: Hypertext Transfer Protocol, a protocol that enables communication between different systems, transferring information and data over a network ¹.
- *HTTPS*: Hypertext Transfer Protocol Secure, which works to protect communication between web servers and browsers when transporting data ¹.

*Key differences between HTTP and HTTPS:*
- *Security*: HTTPS secures connections with a digital security protocol that uses cryptographic keys to encrypt and validate data ¹.
- *Encryption*: HTTPS encrypts the transport of data so it’s not visible to hackers or others monitoring the connection ¹.
- *SSL Certificate*: The use of an SSL certificate is the key difference between HTTPS and HTTP ¹.
- *Speed and Performance*: Websites will load relatively faster with HTTPS, especially if used with a server that supports HTTP/2 ¹.

HTTP (Hypertext Transfer Protocol) and HTTPS (Hypertext Transfer Protocol Secure) are both protocols used for transmitting data over the internet, but they differ in terms of security and data encryption. Here's an overview of each protocol and their differences:

1. **HTTP (Hypertext Transfer Protocol)**:
- HTTP is a protocol used for transferring hypertext documents, such as web pages, between a client (such as a web browser) and a server over the internet.
- HTTP operates over TCP/IP (Transmission Control Protocol/Internet Protocol) and typically uses port 80 for communication.
- HTTP is a plaintext protocol, meaning that data transmitted over HTTP is not encrypted and can be intercepted and read by malicious actors. This lack of encryption makes HTTP vulnerable to eavesdropping, tampering, and data interception attacks.

2. **HTTPS (Hypertext Transfer Protocol Secure)**:
- HTTPS is an extension of HTTP that adds a layer of security through the use of encryption. It encrypts the data transmitted between the client and the server, providing confidentiality, integrity, and authentication.
- HTTPS uses SSL/TLS (Secure Sockets Layer/Transport Layer Security) protocols to encrypt data exchanged between the client and the server. SSL/TLS encryption ensures that data transmitted over HTTPS cannot be intercepted or tampered with by unauthorized parties.
- HTTPS operates over TCP/IP, like HTTP, but it uses port 443 for communication.
- Websites using HTTPS are identified by a secure padlock icon in the browser's address bar and typically have URLs starting with "https://" instead of "http://".

3. **Key Differences**:
- Security: The main difference between HTTP and HTTPS is security. While HTTP transmits data in plaintext, making it vulnerable to interception and manipulation, HTTPS encrypts data to protect it from eavesdropping and tampering.
- Encryption: HTTPS uses SSL/TLS encryption to secure data transmitted between the client and the server, whereas HTTP does not encrypt data.
- Port: HTTPS uses port 443 for communication, while HTTP typically uses port 80. This allows network administrators to differentiate between HTTP and HTTPS traffic and apply security policies accordingly.

In summary, HTTPS provides a secure and encrypted communication channel between clients and servers, protecting sensitive data from interception and manipulation. It is widely used for secure transactions, such as online banking, e-commerce, and sensitive data transmission over the internet. HTTP, on the other hand, is suitable for non-sensitive data transmission where security is not a concern.