Embedded Signup launched in 2022, replacing the older multi-step / multi-day signup process. With Embedded Signup, a business creates a Facebook Business Manager + WABA + verifies + provisions a number — all in 5-10 minutes from the BSP's onboarding wizard.
The flow: enter business details, verify ownership of a phone number (SMS or call), confirm Facebook Business Manager access (or create one), accept Meta terms. Number is live within minutes.
Embedded Signup is the standard now for any modern BSP. Older BSPs may still use slower flows that require Meta support tickets — a sign of weaker tech.