How it behaves
- It only uses historical data already inside the platform or source connection.
- In AEP, older data is reprocessed so Profile, audiences and destinations can use it.
- In CJA, the connection loads the chosen months so Workspace can report on them.
Choosing a value
More history gives richer trends and lookback windows, but increases processing time and may count towards licensed volumes. Agree the value with analytics stakeholders and check your contract limits.
Frequently asked questions
Does backfill import data from my data warehouse?
No. It only processes data already available to the platform or source connection.
Can I change backfill later?
Options depend on the connection type; review current Adobe documentation before relying on a change.
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