Plan an official WhatsApp business integration for SaaS

Use the official business product for its supported outcome

A cloud-hosted official interface can be evaluated through provider application review, business eligibility, sender setup, permissions, messaging rules, and documented callbacks. DewEngine has not completed that work. The planned product is not a bridge to WhatsApp App history, personal accounts, or groups. Scraping, provider-control evasion, and anti-detection are excluded. Missing App behavior stays unavailable rather than being hidden behind a common WhatsApp name.

Map each customer business and sender explicitly

A multi-tenant product needs stable relationships among DewEngine workspace, customer application, provider business context, sender identity, customer administrator, and external recipients. Onboarding should verify that the customer may manage the selected asset. One provider application may serve many tenants only when every callback and command resolves to the exact account. Display numbers cannot substitute for provider-scoped IDs in authorization or routing.

Keep application and customer grants purpose-bound

Provider application secrets, access grants, verification material, and webhook secrets require encrypted storage, separate runtime permissions, rotation, and redacted diagnostics. Customer application code stores a DewEngine account ID and uses its own scoped API key. Support should see grant health and missing permissions without secret values. Reconnect and offboarding need to distinguish a sender problem from application-wide revocation so one tenant cannot disrupt another.

Admit content through business rules before dispatch

The SaaS owns recipient purpose, consent evidence, content selection, template choice where required, and human approval. DewEngine's future layer could validate the released message category, account capability, suppression, and provider budget, then record a durable command. Provider acknowledgement and later delivery observations remain separate. Unsupported media or policy state should fail predictably, while ambiguous sends wait for reconciliation rather than being repeated.

Route business callbacks to canonical customer events

Ingress must validate provider evidence, identify product and sender, resolve the tenant, deduplicate repeats, and handle delayed order. Business-message events can then update command or message state and produce signed DewEngine webhooks. Unknown senders and retired grants enter quarantine. Event gaps and authority should be documented so the SaaS knows when to reconcile and never assumes callback silence means a recipient outcome.

Complete provider and production review before onboarding

A release needs approved business and application configuration, eligible senders, customer onboarding, least privilege, consent and suppression, message-category enforcement, media fixtures, quota and quality feedback, callback validation, tenant isolation, credential rotation, support, export, retention, deletion, billing readiness, and incident shutdown. Real sender conformance must match public documentation. A local fake callback or common SDK model does not make the cloud integration usable.

• Publish official business-product limitations beside every SaaS capability
• Do not imply QR-linked App history or group behavior in Cloud documentation