What is Integration?
An integration is a working connection between two systems that lets data or actions flow between them. It is the built result rather than the interface that made it possible, and it typically includes authentication, data mapping, error handling, and some way of keeping the two sides in step over time.
Integrations take a few recurring shapes. Some poll on a schedule, some react to webhooks, some synchronize in both directions, and some simply surface one system's capability inside the other's interface. The hard parts are rarely the first successful request. They are field mapping between different data models, deciding which side wins a conflict, and recovering cleanly after an outage.
Most business value comes from systems that already exist talking to each other. For AI systems this is doubly true, because an agent with no connections can only produce text. Every connected system widens what it can observe and change, which is also why each connection deserves its own scoping decision and its own review rather than being enabled by default.
The most common mistake is stopping at the happy path. Real integrations must survive expired credentials, schema changes on the other side, rate limits, duplicate deliveries, partial failures, and records deleted in one system but not the other. A second mistake is treating the first working version as finished, when integrations degrade continuously as both sides evolve.
The word is used loosely. A vendor page listing a hundred integrations may mean anything from a deep two way synchronization to a link that opens the other product. When evaluating one, the useful questions are which direction data moves, how often, what happens on conflict, and what happens when the connection breaks.
Key points
- The built connection, not the API that enabled it.
- Common shapes: polling, webhook driven, one way and two way sync.
- The hard parts are field mapping, conflicts, and recovery.
- Marketing use of the word covers wildly different depths.
- Ask about direction, frequency, conflicts, and failure handling.
In practice
A company connects its form tool to its customer database. Each submission fires a webhook, a small service maps form fields onto database fields, checks whether the email address already exists, updates that record or creates a new one, and writes a note when something fails. That mapping, the duplicate check, and the failure path are the integration. The two products' APIs merely made it possible.