WhatsApp Cloud API vs On-Premises API: which should you use?

When people say “the WhatsApp Business API,” they can mean one of two things: the Cloud API that Meta hosts, or the older On-Premises API you run yourself. Here's the practical difference and which to pick today.

The Cloud API (hosted by Meta)

Meta runs the infrastructure; you call their endpoints over HTTPS. There's nothing to host, nothing to patch, and you get new features first. Using the API is free — you pay only for messaging (see pricing). For the vast majority of businesses, this is simply the right choice.

The On-Premises API (self-hosted)

The original approach: you deploy and run Meta's API containers on your own servers. It gave large enterprises tighter control over data locality and throughput — but it means you own the uptime, scaling, upgrades and security. Crucially, Meta has been winding the On-Premises API down in favour of the Cloud API, so building new on it is building on a sunset.

Head to head

• Who hosts it: Meta (Cloud) vs you (On-Premises).
• Ops burden: none vs significant.
• New features: first on Cloud.
• Future: actively invested (Cloud) vs being deprecated (On-Premises).

The verdict

Unless you have a hard, specific reason to self-host, use the Cloud API. It's less work, cheaper to operate, and it's where WhatsApp is going.

Where walpio sits

walpio is built on the official Cloud API, so you get all of its benefits — plus the operational layer on top: automatic 24-hour-window handling, template management, delivery tracking and a team dashboard. You bring your own Meta account and number; we operate them through one clean endpoint. Cloud API power, none of the plumbing.