The app is a phone; the API is a system
The WhatsApp Business App serves one phone and one operator. The API is a platform: multi-agent inboxes, automations, catalogs, templates, integrations and analytics. The migration is a decision about scale, not features - the moment WhatsApp becomes a sales surface, the app is holding you back.
What the migration involves
Meta verification and business-manager setup, a provider (we use and recommend BSPs with local support), API approval through Meta (3-10 business days typically), template creation and approval (marketing templates for broadcasts, utility templates for transactional messages), and the opt-in audit - every number must have recorded consent. Then the flows: cart, order, support, reorder.
Costs: API pricing is per conversation (template and service conversations), plus provider fees. For most businesses, the per-message costs are trivial next to the sales flows replace.
The three red flags before you migrate
If you have no opt-in system, build it first - the API forces compliance. If your team can't staff a 24/7 chat surface, configure the assistant and escalation rules before launch. If you're migrating to 'have an API', don't - migrate when the flows justify it. The brands that get value treat the API as infrastructure for flows, not a bigger app.
