O3 Agency is a Meta advertising studio. We help brands grow profitably through data and creative strategy.

Fully optimized Facebook and Instagram campaigns built to drive direct ROI.
Scroll-stopping creative that converts viewers into customers.
In-depth data analysis and tracking so you know exactly where every euro comes from.
Transparent monthly retainers built for every stage — from first campaign to aggressive scaling.
Best for small businesses building brand awareness, testing Meta ads, and generating initial traffic.
Best for growing businesses focused on lead generation, customer acquisition, and increasing sales.
Best for established brands, e-commerce companies, and businesses ready for aggressive growth.

You work directly with Eeli and Otto's team. We never outsource your project to interns.
Our optimization is based on the hardest possible data — not guesswork.
We do one thing — Meta advertising. And we do it better than anyone else.
Average ROAS
Annual ad spend managed
Average revenue growth
Whether it's campaign optimization, a question about your results, or a new project — our support team responds fast.