Reviewing common standards and protocols

Protocols define the specifications for exchanging messages with an edge solution. This means the format of the message, how it is serialized over the wire, and also the networking protocols for communicating between two actors in the solution. Standards and protocols help us to architect within best practices and enable quick decision-making when selecting implementations. Before diving into the common protocols that are used in edge solutions, first, let's review two architectural standards used in information technology and operations technology to gain an understanding of where IoT Greengrass fits into these standards. Using these as a baseline will help set the context for the protocols used and how messages traverse these models in an edge solution.

IoT Greengrass in the OSI model

The Open Systems Interconnection (OSI) model defines a stack of seven layers of network communications, describing the purpose and media used to...