Overview#Application Layer is an abstraction layer that specifies the shared protocols and interface methods used by hosts in a telecommunications Network.
Although both models use the same term for their respective highest level layer, the detailed definitions and purposes are different.
Internet Protocol Suite Application Layer #Application Layer contains the communications protocols and interface methods used in process-to-process communications across an Internet Protocol (IP) computer network.
The Application Layer only standardizes communication and depends upon the underlying Transport Layer protocols to establish host-to-host data transfer channels and manage the data exchange in a client-server or peer-to-peer networking model.OSI-Model the definition of the Application Layer is narrower in scope. The OSI-Model defines the Application Layer as the User Interface responsible for displaying received information to the user.
More Information#There might be more information for this subject on one of the following:
- Application Layer Security
- Application-Layer Protocol Negotiation
- Communication Layers
- Internet Message Access Protocol
- Internet Protocol Suite
- Presentation Layer
- Secure connection
- Transparent Proxy
- Transport Layer