Your "campaign" in the Ads Platform is essentially a set of ads going to a targeted group of people for a specified budget over a pre-determined period of time.
During the course of an advertising plan, you may run one or multiple digital ad "campaigns" to reach your goals.
For example, one ad campaign may help increase name or brand awareness while another promotes an event like a membership drive or a sale.
Each campaign in the ads platform functions and runs independently of the others, and each has its own timeline and budget. You can use the same audience and creative files across multiple campaigns.