# Sync Cohorts with Destinations

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Cohort sync pushes Amplitude cohorts to third-party [destinations](https://amplitude.com/docs/data/destination-catalog) such as ad networks, attribution providers, and marketing automation platforms. Amplitude offers three cadences: a one-time export, a scheduled hourly or daily refresh, and a real-time stream that checks for updates every minute. The cadence you pick also determines which destinations accept the sync.

## One-time sync

Use a one-time sync to send a cohort to your destination once. Use this option if you need to export a cohort to the destination and don't require continuous updates.

## Scheduled sync

Use a scheduled sync to send cohort updates to your destination on an **hourly** or **daily** basis. Amplitude queues sync jobs throughout the hour or day, depending on your selection. You can't select the time of day that a sync occurs.

> **Note:** Scheduled sync timing
>
> Amplitude schedules a time to sync the cohort as soon as you create a new cohort or update the sync details.
>
> The first sync occurs right after Amplitude schedules it. The first two syncs may occur more frequently than every 24 hours.
>
> If you don't update the sync, future sync jobs run around the same time within the time period.

## Real-time sync

Use a real-time sync to keep the destination updated with the most recent cohort information. Real-time sync checks for updates and sends them to the destination every minute.

Amplitude recommends real-time syncs for cohorts that require minute-by-minute precision and don't change by a large number of users from minute to minute. If you choose real-time syncing and notice in the sync history that most syncs update `0` users, hourly sync may work better for your use case.

> **Warning:** Real-time sync limitations
>
> Real-time sync supports cohorts of 1,000,000 users or fewer, and all cohort types except:
>
> - Funnel
> - Retention
> - Stickiness
> - Nth time event
> - Event within
> - Distinct interval
>
> Real-time sync supports all cohort destinations except:
>
> - [Facebook Ads](https://amplitude.com/docs/data/destination-catalog/facebook-ads)
> - [Google Ads](https://amplitude.com/docs/data/destination-catalog/google-ads-cohort-syncing)
> - [Twitter (X) Ads](https://amplitude.com/docs/data/destination-catalog/twitter-ads-cohort)
> - [Hubspot](https://amplitude.com/docs/data/destination-catalog/hubspot-cohort-sync)
> - [Qualtrics](https://amplitude.com/docs/data/destination-catalog/qualtrics)
> - [S3 cohort sync](https://amplitude.com/docs/data/destination-catalog/amazon-s3-cohort)
> - [TikTok Ads](https://amplitude.com/docs/data/destination-catalog/tiktok-ads)
> - [Enterpret](https://amplitude.com/docs/data/destination-catalog/enterpret)
> - [SFMC](https://amplitude.com/docs/data/destination-catalog/salesforce-marketing-cloud-v2)
> - [The Trade Desk](https://amplitude.com/docs/data/destination-catalog/thetradedesk)