MEF
MEF standardises the wholesale and inter-carrier side of connectivity — how one network operator buys capacity, orders services and settles with another. Its Lifecycle Service Orchestration (LSO) APIs, notably LSO Sonata for inter-provider ordering, are the machine-readable contracts behind carrier-to-carrier commerce.
Also known as Metro Ethernet Forum, LSO Sonata, LSO Interlude, MEF Forum.
Providers that carry MEF 3
These providers' own APIs.json profiles carry MEF as a tag — the provider's statement that the standard is part of what it does. APIs.io has not verified the implementation on this page; the de facto profiles on this site are where that measurement exists. Ordered by Kin Score.
Read from the API Evangelist standards directory, facts verified 2026-08-17. Provider links come from the catalog's own identity tags and are rebuilt nightly. If this page is wrong about a standard or a provider, say so.