Prelude to bandwidth throttling

Prelude to bandwidth throttling - DATACAP
Prelude to bandwidth throttling

Clue 1: A limit on the amount of data that can be used in a certain period of time.
Clue 2: A restriction on internet usage.
Clue 3: A prelude to slower internet speeds.
Clue 4: Something that can anger heavy internet users.
Clue 5: A tactic used by internet service providers.

DATACAP