Both are owned by Meta and share an ads system, but they serve different purposes.
Audience
- Instagram: younger audience, visual and creator-driven
- Facebook: broader age range, strong in groups and communities
Content
- Instagram: Reels, stories, visual posts
- Facebook: groups, events, longer posts, Marketplace
Reach
Both rely on recommendations for non-followers. Reels are cross-posted to both.
Ads
Same Ads Manager; you can run ads on both together and let Meta optimise placements.
Which to choose
- Fashion, beauty, food, lifestyle, creators: Instagram first
- Local services, community groups, older audiences: Facebook matters a lot
- Most businesses: be on both, focus effort where customers are
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