Can you name protocols used for application purposes and application interaction?

For practical purposes and application interaction, the following protocols are often used:

• HTTP/HTTPS — the main protocol for data transfer in web applications.
• FTP — for transferring files between client and server.
• SMTP, POP3, IMAP — for sending and receiving emails.
• WebSocket — for two-way real-time communication between client and server.
• MQTT — a lightweight protocol for message exchange in IoT and mobile applications.
• SOAP and REST — architectural styles and protocols for web services.

These protocols ensure standardized data exchange between applications on different devices and platforms.