Also known as OSI layer 7, layer 7
Highest layer of a networked communication model
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~7 min read
An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network. An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. Although both models use the same term for their respective highest-level layer, the detailed definitions and purposes are different.
Historical and conceptual perspective
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).