# Server-to-server (S2S)

Communication directly between backend systems rather than through a user's browser.

Communication directly between backend systems rather than through a user's browser.

## An example

A store's server sends a confirmed purchase event to an authorized measurement service.

## Why it matters

S2S does not bypass consent or make data anonymous. Authenticate requests and handle retries safely.


## Related terms
- [Attribution](https://jolts.xyz/resources/glossary/attribution)
- [Device ID](https://jolts.xyz/resources/glossary/device-id)
- [Mobile measurement partner (MMP)](https://jolts.xyz/resources/glossary/mobile-measurement-partner)
- [Privacy thresholds](https://jolts.xyz/resources/glossary/privacy-thresholds)

## Next step

[Explore advertising](https://jolts.xyz/advertisers) or [monetize your AI app](https://jolts.xyz/publishers).