SegmentStream layers cross-channel attribution and budget optimization on top of Heap by Contentsquare — reading raw event data exported from Heap Connect into your data warehouse, not the Heap reporting interface.
Heap Connect exports raw event data into your own data warehouse. Once that export is configured, point SegmentStream at the same warehouse and SegmentStream reads the events from there.
Heap Connect supports BigQuery, Snowflake, Redshift, Databricks, and Amazon S3. SegmentStream connects to whichever one you use.
SegmentStream does not use Heap's reporting API. The reporting API exposes only processed data with Heap's own session and identity model. SegmentStream consumes the raw exported events from Heap Connect and builds attribution using its own identity graph and algorithms — the same principle as for every other behavioral analytics source.
On initial connection, Heap Connect creates the dataset in your warehouse and populates it with available historical event data. SegmentStream becomes able to use that history as soon as the dataset is reachable. For exact retention and historical-coverage limits on your Heap plan, see Heap's Data Connect documentation.