[1][2] The definition of all-source intelligence has changed over time.
Intelligence analysts that produced intelligence primarily from SIGINT or IMINT, for instance, were considered single-INT producers.
Because of the need to incorporate all-relevant information in reporting, IMINT analysts became GEOINT analysts that include not only IMINT but relevant information from other intelligence sources.
This was especially important in the aftermath of the 9/11 intelligence failures.
In the aftermath of these events, collaborative tools such as A-Space and Intellipedia are used for collaboration amongst all members of the Intelligence Community.