There are two main reasons why ADOs share information with each other, whether via ADAMS or through other on- or off-line methods:

First, for most top athletes, there is more than one organization that has the authority to test the athlete (e.g., a NADO, an IF, WADA, and, on occasion, an events organization). In order to conduct such tests, it is necessary that information about the athlete be communication between the relevant parties.

Second, athletes may be competing or training in various countries, which means that information on athletes need to be shared with ADOs in those countries for anti-doping purposes.

The sharing of such information benefits the athletes, insofar as it ensures that they are not subjected to unnecessary tests or unreasonable demands imposed by ADOs with authority to test the athlete (e.g., required to submit multiple TUE applications or whereabouts information more than once as could previously be the case).