4WP-Booking: How One Dental Clinic’s Request Became a Domain-Driven Booking Platform

3 Sep 2026· Originally published on Medium ·DDD & Architecture

In short

Booking is modelled as an independent domain, not as an integration with one specific API.
DDD and SDD first, code second, so the architecture never depends on a provider.
Provider keys stay on the server and contracts plug in as modules, so new calendars are easy to add.

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