BDS (Broadcast Data System) is a service that all major record labels and radio stations subscribe to. It is similar to Credit Reporting Agency like Equifax, TransUnion or Experian.
It monitors the airplay from all of major radio stations across the country and radio station must be a BDS reporter for it to track the music and report it to the labels and radio stations.
In order for BDS being able to detect your airplay it has to be encoded and submitted into the BDS system and after that if any of the big radio stations like Hot 97, Power 105, Sirius XM and 66 Raw plays it, you will get your music tracked.
This will be your credit report to the labels and radio station to negotiate more airplay or for them just to consider to play your record. The more spins you get the more likely more station will consider you to add them, then labels potentially take a look at you and your music will also get listed in the Billboard charts if it performs well.