Sync vs Integration
Data & TrackingAlso: Data Sync vs Integration · Synchronisation vs Integration
Quick definition
Sync and integration describe different layers of the same problem. An integration is the connection built between two systems, often using an Application Programming Interface (API) or webhook. A sync is the ongoing process of updating data through that connection so both systems agree.
How it varies across Australia
Martech stacks vary widely in how many integrations feed a single Customer Relationship Management (CRM) system. The businesses with the fewest sync errors are rarely the ones with the most integrations. They're the ones that documented what syncs one-way, what syncs both ways, and what refreshes on a delay.
See data and tracking maturity across Australian industries →What it actually means
Sync and integration get used interchangeably in vendor pitches, but they sit at different levels of the same stack.
An integration is the plumbing. It's the Application Programming Interface (API) connection, webhook, or native app that lets two systems, say a Customer Relationship Management (CRM) tool and an email platform, exchange data at all. Build the integration and you've built a door between two rooms.
Sync is what happens once that door exists. It's the actual movement of records back and forth so both systems reflect the current state. A sync can be one-way (CRM pushes contacts to the email tool, nothing comes back) or two-way (both systems update each other). It can run in real time, on a schedule, or only when triggered manually.
The confusion causes real damage. Teams assume that because an integration exists, data is syncing correctly, completely and in both directions. Often it's syncing one field, one way, once a day. Anyone debugging a missing lead in the CRM should ask two separate questions: is the integration actually connected, and is the sync configured the way we assumed.
An integration is a door between two rooms. A sync is someone actually walking through it with the furniture.
How it shows up
It shows up as a support ticket that says 'the integration is broken' when the real fault is a sync rule silently excluding records that don't meet a filter condition. It shows up when marketing assumes a webhook fires instantly but the platform actually batches syncs on a delay. It also shows up in vendor contracts, where 'native integration' is marketed heavily but the sync frequency and direction are buried in a settings page nobody reads before signing.
Where people get this wrong
Related terms
Common questions
Is a sync the same thing as an integration?
No. The integration is the connection between two systems, usually built with an Application Programming Interface (API) or webhook. The sync is the ongoing process of moving data through that connection. You can have an integration with a broken or misconfigured sync.
What's the difference between a one-way and a two-way sync?
A one-way sync pushes data from one system to another without sending anything back, so edits made in the receiving system get overwritten on the next sync. A two-way sync updates both systems, which requires clearer rules about which system wins when a conflict occurs.
Why does my CRM show old data even though it's integrated with another tool?
The integration being live doesn't guarantee the sync runs in real time. Many platforms sync on a schedule, batch every few hours, or only sync specific fields. Check the sync settings, not just the connection status.
Should marketers care about the difference?
Yes, because it changes how you troubleshoot. If a lead is missing, checking whether the integration is connected answers one question. Checking the sync direction, filters and frequency answers the more useful one about why that specific record didn't move.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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