The depth of the page in a Visit to which customers to your site browse. Let's say a customer views Page A, B and then C in a single visit. Pages A, B, and C have a hit depth of 1, 2, and 3, respectively.
Suppose, in a visit, you visited 9 pages : A -> B -> C -> D -> E -> F -> G -> A -> D - visit ends.
The Hit Depth (not to be confused with the Visit Depth) would be as follows for these pages:
So, Hit Depth shows the depth of the corresponding hit; it will increment gradually until the visit ends.
There is a difference in how hit depth and visit depth are calculated, which you need to consider when selecting which one to use.
Suppose you have a following sequence:
Page A >> Page B >> Page A >> Custom Link 1 >> Custom Link 2 >> Page C >> Custom Link 3 (with Add to Cart event) >> Page C
|Sequence||Hit Depth||Hits contributing to Visit Depth|
|Custom Link 1||4||-|
|Custom Link 2||5||-|
|Custom Link 3 (with Add-to-cart event)||7||-|
Note that in this example: