Build an audience once. Reuse it across every account.
A shared library of custom, lookalike, and exclusion audiences that works across all your ad accounts. Stop rebuilding the same seeds from scratch for every client. Define once, reuse everywhere.

One library. Every account.
Custom audiences, lookalikes, and exclusion lists usually live trapped inside a single ad account. Wevion builds a shared layer on top, so the audiences you create in one account are available across all of them. Agencies running 50 clients stop rebuilding the same seed list 50 times.

Lookalikes and exclusions that travel.
Reuse a proven lookalike seed across accounts instead of recreating it everywhere. Apply the same exclusion lists to keep converters and irrelevant segments out of new campaigns. Consistent targeting across every account, set up in seconds, not hours.

Consistency without the copy-paste.
When your best-performing audience changes, update it once and reuse the new version everywhere it is applied. No more drift between accounts, no more wondering which client got the old list. The library is the single source of truth for your targeting.
Key advantages
Audiences across accounts
Custom audiences, lookalikes, and exclusions live in one shared library instead of being trapped in a single ad account. Apply them anywhere, from any account, in a few clicks.
Stop rebuilding from scratch
Reuse a proven seed or exclusion list across new accounts instead of recreating it every time. Onboard a new client with your best targeting already in place.
One source of truth
Update an audience once and the new version applies everywhere it is used. No drift between accounts, no guessing which client got the old list.
How Elena onboards a new client in minutes
Elena's agency manages Meta campaigns for 40 e-commerce clients. Every new client used to mean rebuilding the same proven audience structure from scratch: custom audiences, lookalike seeds, and exclusion lists, account by account, hours of repetitive work. Now she keeps her best audiences in Wevion's shared library and applies them to a new account in a few clicks. The client is launch-ready the same afternoon, with the exact targeting that already works for the rest of her roster.
What changes in practice
Rebuilding the same audiences per account
Every account starts empty. Recreate custom audiences, rebuild lookalike seeds, and re-enter exclusion lists one account at a time. A new client means hours of repetitive setup before a single campaign can run.
Define once, apply everywhere
Keep your proven audiences in one shared library. Apply them to any account in a few clicks. Onboard a new client with the exact targeting that already works, launch-ready the same day.
Shared library
custom, lookalike, and exclusion audiences reused across every account instead of rebuilt each time