Open Measurement SDK vs proprietary viewability SDKs

Open Measurement SDK vs proprietary viewability SDKs

IAB's OM SDK promised one integration for all verifiers. It mostly delivered, with caveats.

Open Measurement SDK
— ✓ One SDK, multiple verification vendors, no per-vendor bloat
— ✓ Publisher-friendly, lighter app footprint
— ✗ Vendor still controls signal interpretation, parity isn't guaranteed across measurers

Proprietary SDK (vendor-direct)
— ✓ Earliest access to that vendor's newest signals and beta metrics
— ✗ Each added vendor bloats the app and slows integration

For publishers, OM SDK is the clear default, one integration keeps your binary lean and buyers happy. Only go proprietary if a single demand partner contractually requires their own SDK or you need a metric OM hasn't standardized yet.

Verdict: OM SDK as default for app size and flexibility, proprietary only on contractual or bleeding-edge metric needs.
Best for: publishers managing SDK weight while satisfying verification demands.