The Context Advantage glossary
Plain-English definitions for the agentic AI, data engineering, and AI governance terms used throughout the book. Every term links to the chapter that goes deeper.
118 of 118 terms
A
- Action Control
Policies that decide what an agent is allowed to do, not just what it can see.
- Access Control
Policies that decide what data an identity is allowed to see.
- Action Inventory
The structured list of every action an agent can take, with risk tier and owner.
- Action Gateway
An in-line service every agent action passes through for policy checks and logging.
- Agent Graph
A multi-agent topology where agents call each other freely. Powerful and easy to overuse.
B
- Business Memory
The layer that captures how your company defines its world, beyond just schemas.
C
- Cascading Models
Trying a cheap model first and escalating to a larger one only when needed.
- Choice
The ability to swap models, tools, or vendors without rewriting your system.
- Confidence
How sure the agent is about its answer, ideally surfaced honestly.
- Context
The meaning, definitions, and relationships an agent needs to answer correctly.
- Context Layer
The queryable layer above storage and compute that holds business meaning.
- Control
The set of policies that make agent behavior safe and predictable.
- Cost
The total expense of running AI — tokens, tools, retries, and infrastructure.
- Cost-Aware Architecture
A design that treats cost like latency: a first-class requirement.
- Calibrated Confidence
Confidence derived from system evidence, not from raw model probabilities.
D
- Delta Lake
An open table format that adds reliability features on top of Parquet files.
E
F
G
- Gateway
A single entry point that all AI calls go through for security, routing, and logging.
- Glossary
A list of business terms with agreed, simple definitions.
H
- Human in the Loop
A design where humans review, approve, or take over agent actions.
- Handoff Contract
The typed schema two agents agree on when passing work between them.
I
- Iceberg
An open table format widely adopted for lakehouses.
- Ingestion
Bringing raw data into your platform from source systems.
- Idempotent
Safe to retry — the same call twice gives the same result.
K
- Knowledge Graph
A structured map of concepts and how they relate, used to enrich context.
L
- Lakehouse
A storage architecture that combines lake flexibility with warehouse reliability.
M
- Multi-Agent
A design where multiple specialized agents work together.
O
P
- Parquet
An open columnar file format widely used in data platforms.
- Permission
A rule about what an identity is allowed to see or do.
- Policy as Code
Writing governance rules as software the system enforces automatically.
- Prompt Engineering
Designing prompts so models behave well for a given task.
- Pipeline Pattern
A multi-agent topology where agents run in a fixed sequence — the safest default.
R
- RAG
Retrieval-Augmented Generation — letting the model read your data before answering.
- Reference Architecture
A shared pattern teams follow so each new project does not reinvent the wheel.
S
- Semantic Cache
A cache keyed by meaning, not exact text, that reuses similar answers.
- Semantic Search
Finding content by meaning, not exact keywords.
- Sensitivity Tag
A label that marks data by how sensitive it is, like PII or financial.
- Stream
Continuous data that arrives event by event rather than batch by batch.
- Structured Retrieval
Looking up answers in tables, metrics, or APIs before falling back to text search.
- Synthetic Data
Generated data used for training or testing when real data is scarce.
- Supervisor Pattern
A multi-agent topology where one agent routes work to specialists.
T
- Termination Condition
The explicit rule that ends an agent loop. Without one, loops burn money.
- Trust Signal
A visible cue (source, definition, confidence, limit) that helps users decide when to trust an agent.
U
- Unity Catalog
Databricks' governance layer; one example of a managed catalog.
V
- Vector Search
Finding similar content using embeddings.
W
Z
- Zero-Shot
Asking a model to do a task it was not explicitly trained for.
Go deeper than definitions.
The book turns these terms into a working method — Context, Control, Cost, Choice.