--- tags: [internet, networks] created: Friday, September 06, 2024 --- # Application Layer of the Internet Protocol The final, topmost layer of the Internet Protocol suite. ![Data at the Application Layer](../img/application-layer-data.png) The Application Layer is where we get to the protocols that describe the behaviour of applications. All the preceding lower levels are effectively **plumbing that enables applications to do the things they want accross the internet**. Whereas the lower levels facilitate communication accross the internet, the Application Layer is concerned with achieving a specific task once the ability to communicate is assured. Application Layer protocols include HTTP, the Simple Mail Transfer Protocol (SMTP), and FTP.