What is an enterprise context layer?

An enterprise context layer is the governed infrastructure that makes AI usable at organizational scale: certified definitions, lineage, policies, and business rules from 80+ data systems, shared across every agent, team, and model that needs them. Unlike per-agent context packaged into individual system prompts, this layer is certified by domain experts before deployment, persists across model upgrades, and gets more accurate as more agents use it.

What is a context layer for AI?

A context layer for AI is the infrastructure that gives models your organization's business meaning, relationships, and rules so they can understand and act on your data correctly, not just statistically guess. It sits between your data platforms and AI tools as a governed, machine-readable layer of definitions, lineage, policies, and decision history.

How is a context layer different from a semantic layer?

A semantic layer standardizes business metrics and dimensions (like "revenue" or "active customers") so humans and tools query data consistently. A context layer goes further by adding relationships, operational rules, exceptions, governance, and historical patterns so AI agents can reason and make decisions, not just calculate numbers. The semantic layer is one key input into the broader context layer, and Atlan unifies both in one metadata platform.

What is context engineering?

Context engineering is the practice of systematically designing, bootstrapping, testing, and maintaining the context layer that AI analysts and agents depend on. It covers everything from extracting definitions and rules out of code, dashboards, and wikis to encoding them in graphs and semantic models, then using golden questions and evals to harden that context for production use cases.

What is a context graph and how is it different from a knowledge graph?

A context graph is a knowledge graph enriched with operational metadata, lineage, policies, and decision traces that show not just what things are, but how things work in your business. Traditional knowledge graphs focus on entities and semantic relationships; context graphs add time, ownership, quality, and governance signals so AI can follow real enterprise logic across data, tools, and teams.

What is the AI context gap and why does it cause AI failures in production?

The AI context gap is the space between what AI models are trained on and what your people intuitively know: local definitions, unwritten rules, edge cases, and judgment calls. When that context is not captured in a structured, shared layer, pilots look impressive but break in production with inconsistent, untrusted, or non-compliant answers, even when the underlying models are strong.

How does a context layer fix AI hallucinations?

A context layer reduces hallucinations by forcing AI systems to ground their answers in a governed, queryable store of verified definitions, relationships, and rules instead of free-forming from generic training data. Combined with RAG or graph-based retrieval, it narrows the model's search space to trusted enterprise context, improving accuracy and making "I don't know" a safer option than confident guesses.

How does Atlan implement the enterprise context layer?

Atlan builds the enterprise context layer across three phases in the Context Engineering Studio. Bootstrap: Atlan AI connects to 80+ data systems and generates semantic definitions, business terms, and relationship maps from existing metadata. Engineer: domain experts test context accuracy using golden questions and evals before anything ships. Deploy: certified context becomes available via SQL, APIs, SDKs, and the Atlan MCP Server, so ChatGPT, Claude, and Snowflake Cortex all pull from the same source of truth. Everything lives in the Context Lakehouse, an open, Iceberg-native layer that stays portable across models.

What is the relationship between a data catalog and the enterprise context layer?

The data catalog is the foundation of the enterprise context layer — the infrastructure layer that organizations already have. A data catalog manages metadata, lineage, and governance across an organization's data estate. The enterprise context layer takes those components and connects them into a live, traversable graph that AI agents can query at runtime. Organizations don't build a context layer from scratch; they activate the catalog infrastructure they've already invested in. The eight core catalog capabilities — discovery, lineage, governance, classification, glossary, quality, access control, and policy enforcement — each map directly to a context layer function.