The Complete Meta Embedded Signup Guide: Connecting WhatsApp Cloud API

Connecting your existing business WhatsApp number to the official Meta Cloud API used to require complex manual steps. Meta's Embedded Signup flow has made this onboarding process much faster, allowing businesses to link their accounts in minutes.

Here is what you need to know about the three key stages of Embedded Signup, including how coexistence mode allows you to keep chat history intact.

Stage 1: Launching the Meta Web Flow

The process starts on your computer desktop. When initiating setup from the PAIC dashboard, Meta opens an official, encrypted authorization window:

• Log in with the Facebook account that has administrative permissions for your business.
• Select or create your Meta Business Portfolio (Meta Business Account).
• Select your official WhatsApp Business Account (WABA) or allow Meta to generate a new WABA profile automatically.
• Verify your public business display name and category (e.g., Restaurant, Medical & Health, Sports Club).

Stage 2: Coexistence Mode & QR Verification

Meta now offers Coexistence Mode for supported regions. This means you do not necessarily lose access to your mobile WhatsApp Business application when connecting to the API.

• Scan the on-screen QR code using your phone's WhatsApp Business app (Settings > Linked Devices).
• Authorize the Cloud API connection directly on your phone.
• Keep your existing customer message history while unlocking automated AI responses in parallel.

Stage 3: Webhook Confirmation & Launch

Once verified, PAIC automatically confirms webhook endpoints and begins routing incoming conversations according to your customized business rules. We verify every connection before your assistant goes live.