Question
(CJA) How does persistence work with first/last known allocation & custom lookback windows?
It is pretty straightforward when using first known or last known allocation with session expiration in Adobe CJA. It is less clear when a custom lookback window is used, because of both the forward and backward nature of these allocation types.
Example, if a user had the following sequence, what would be the first and last known values assuming the following
- Day = the date in January
- Chart date range is Jan 1 - Jan 31
- Custom lookback window is 7 days for both the last known and first known properties.
| Day | Value on Event | First Known | Last Known |
|---|---|---|---|
| 1 | C | C | |
| 5 | C | C | B |
| 9 | B | C | B |
| 14 | B | A | |
| 18 | A | B | A |
Does custom lookback essentially work as custom look-forward for ‘last known’? Is the above correct?