---
Title: "What Is Two-Way Sync? Bidirectional Data Sync"
Url: "https://computer.io/glossary/two-way-sync"
Topic: "Data and security"
Description: "Two-way sync keeps data in two systems consistent, so a change in either one updates the other. How bidirectional sync works and why it matters for AI."
---

# What is two-way sync?

Two-way sync, or bidirectional sync, keeps data consistent between two systems so that a change made in either one is automatically reflected in the other, for example a ticket status updated in a help desk also updating the linked issue in an engineering tool.

## One-way vs two-way sync

|  | One-way | Two-way |
| --- | --- | --- |
| Direction | Source → target | Both |
| Edits in target | Overwritten or lost | Synced back |
| Use | Reporting, backups | Live collaboration |

## Challenges

Conflict resolution, field mapping, permissions and rate limits.

## Why it matters for AI

AI agents need current data and must write changes back to the systems people use. DevRev's AirSync is designed for this.

## FAQ

### What is bidirectional sync?

Another name for two-way sync.

### How are sync conflicts handled?

Usually by rules such as last-write-wins or field ownership.

### Is two-way sync real time?

Often near real time, depending on the APIs.

## Related terms

- [Knowledge graph](https://computer.io/glossary/knowledge-graph)
- [Issue tracking](https://computer.io/glossary/issue-tracking)

## How Computer helps

- [How computer works](https://computer.io/how-computer-works)

## Compare

- [Devrev vs zendesk](https://devrev.ai/compare/devrev-vs-zendesk)

## Further reading

- [What is enterprise ai memory](https://devrev.ai/blog/what-is-enterprise-ai-memory)