Learn · every claim sourced
Understand CPaaS, step by step
Plain-language guides, use cases and research from the community, with a source for every claim. New here? Begin with the five short reads below.
The library
WhatsApp 101: the Business app, the Business Platform and the rules between them
What WhatsApp offers businesses in October 2026: the free Business app for one team on one phone, the Business Platform for systems and scale, how the 24-hour window and templates work, what Meta charges since the October 2026 changes, and where the channel fits.
The 24-hour window: the rule that breaks most first integrations
Why your WhatsApp test message worked and your production message did not: how the customer service window works, what it costs inside and outside, and how to design around it.