This is one of the core components in the LTI Advantage specification. In LTI parlance, the platform serves as the service consumer as they are consuming and making available the tool.
A tool platform or, more simply, platform has traditionally been a Learning Management Systems (LMS), but it may be any kind of platform that needs to delegate bits of functionality out to a suite of tools. In LTI 1.x a Platform was known as a Tool Consumer.
In prior versions of LTI this was called the ‘tool consumer’ but that verbiage does not align with industry standard terminology and was retired.
