Yes, you absolutely can run multiple campaigns with different objectives on the same ad account at the same time—this is a common and recommended practice for scaling and full-funnel strategy.
For example, you can run:
- A Sales (Conversions) campaign to drive purchases
- An Engagement campaign to boost social proof
- A Lead Generation campaign to build your email list
- A Traffic campaign to warm up audiences before retargeting
Meta's algorithm will treat each campaign independently based on its objective, audience, and budget. Just make sure you manage audience overlap carefully so your campaigns aren't bidding against each other for the same users.