Sending your first WhatsApp Cloud API message takes an afternoon. Running WhatsApp as a production channel takes a lot more: webhooks you can trust, a 24-hour window modelled correctly, templates and sending limits, phone numbers, media, onboarding, and an inbox where people actually reply. Here's what each piece took us at WAPGROWAI , with real line counts from our codebase, and a fair answer to when building it yourself is the right call.

This is the last post in a series that went through each of these pieces in detail. This one puts them side by side.

The afternoon version

Meta's Cloud API is genuinely easy to start with.…