Earlier this month, Facebook announced that, starting in September, all Facebook ad campaigns - both new and existing - will be migrated to the platform's automated campaign budget allocation system, which aims to maximize ad performance by allocating more spend to higher performing ad sets.
At present, Facebook advertisers are able to set specific budgets by ad set, but the new system will remove that option, with advertisers only being able to set minimum and maximum spend limits at the ad-set levels. All Facebook advertisers will be receiving a notification on this - if you haven't, you can expect to see one in your inbox soon, providing the below overview of how the new system works.
Read more: https://www.socialmediatoday.com/news/facebooks-migrating-all-ad-campaigns-to-campaign-budget-optimization-info/549056/
Original source: https://www.socialmediatoday.com/