AI memory, defined
Short, plain definitions of the terms behind shared memory for AI-native teams.
Company Brain
A Company Brain is a context layer that captures, structures and retrieves what a company has discussed, decided and learned across people, AI agents and documents.
See full definitionAI-agent conversation
An AI-agent conversation is a working session between a person and an AI agent, such as a Claude Code session.
See full definitionAI memory layer
An AI memory layer is an external system that captures information from AI interactions and recalls it in later sessions, giving otherwise stateless models persistent context across time.
See full definitionShared context
Shared context is the working knowledge (decisions, conventions, and background) that every AI tool and teammate can read from one place, instead of each keeping its own isolated copy.
See full definitionAgent memory
Agent memory is the ability of an AI agent to store and recall facts, decisions, and outcomes across runs, so it improves over time instead of restarting from scratch each session.
See full definitionContext window
A context window is the amount of text a model can consider at once; anything outside it, including past sessions, is invisible to the model unless re-supplied.
See full definitionSecond brain for teams
A second brain for teams is a shared, searchable store of a team's knowledge and decisions that both people and their AI tools can draw on, so institutional memory does not live only in individual heads.
See full definitionRetrieval-augmented generation (RAG)
RAG is a technique where a model retrieves relevant documents from a knowledge base and uses them to ground its answer, rather than relying only on what it was trained on.
See full definitionSession memory
Session memory is context that lives only for the duration of a single AI session and disappears when it ends, unlike persistent memory which survives across sessions.
See full definitionModel Context Protocol (MCP)
The Model Context Protocol (MCP) is an open standard that lets AI tools connect to external systems, such as a memory layer, through a common interface.
See full definition