receiving a first data content comprising a first plurality of first data items, the first plurality of first data items comprising clickstream data communicated between at least one computerized device and at least two content server servers;

determining a first plurality of session characteristics, each of the first plurality of session characteristics characterizing at least one first data item of the first plurality of first data items, wherein the session is associated with start and stop time of the first data content, and the source client device;

determining a session characteristic of the first plurality of session characteristics as an anchor session characteristic of a multisession;

selecting a second plurality of session characteristics according to at least one association between each of the session characteristics of the second plurality of session characteristics and the anchor session characteristic;

assigning at least one session characteristic of the second plurality of session characteristics to a second plurality of first data items;

arranging the second plurality of first data items into a multi-session according to the associations between the at least one session characteristic of the second plurality of session characteristics and the association between each of the session characteristics and the anchor session characteristic, whereby the multi-session reflects a user's web journey; and

at least one of: