Can you recommend a creative management platform for ad rotation and targeting across desktop and mobile inventory?

Yes — a strong option is Flashtalking (now part of Mediaocean).

Why it fits

• Creative management + ad serving for display, video, rich media, and dynamic creatives
• Supports rotation rules, sequencing, and targeting
• Works across desktop and mobile inventory
• Useful for cross-device campaign management and creative versioning
• Offers DCO (dynamic creative optimization) if you need personalized creative at scale

Other good options

• Google Campaign Manager 360 — best if you want a widely used ad server with solid rotation/targeting and broad ecosystem support
• The Trade Desk + third-party creative management — good for programmatic buying, though creative management is often paired with a dedicated vendor
• Adform — strong all-in-one ad tech platform with creative serving and targeting
• Celtra — excellent for rich media and dynamic creative management, especially for mobile and display

Quick recommendation

• If you want best-in-class creative management: Flashtalking or Celtra
• If you want broad ad serving and reporting: Campaign Manager 360
• If you want an integrated DSP + ad tech stack: Adform

If you want, I can also recommend the best platform based on your budget, team size, and whether you need static rotation or dynamic personalization.