# REG121 - [Get Started with REG121: Build Your Site in Minutes](https://docs.reg121.com/platform/getting-started.md): Learn the two ways to create your REG121 website — build from scratch with the Site Wizard or convert your existing site with the Import Wizard. - [Edit Your REG121 Site: AI Chat and Point-and-Click](https://docs.reg121.com/platform/editing-your-site.md): Discover the two ways to edit your REG121 site — describe changes in plain English with the AI editor, or click directly on any element to update it. - [Collect Bookings and Enquiries with Built-In Forms](https://docs.reg121.com/platform/forms-and-data.md): Add booking, quote, and contact forms to any page on your site. Every submission is saved to your dashboard so you never miss an enquiry. - [Store and Display Business Data with Custom Tables](https://docs.reg121.com/platform/custom-data-tables.md): REG121 can build structured database tables tailored to your business — manage appointments, products, schedules, and more from your dashboard. - [Publish Your Site with REG121 — One Click, Fully Hosted](https://docs.reg121.com/platform/publishing-and-hosting.md): Learn how to publish your REG121 site in one click. Hosting is fully managed and included in every plan — no servers, no setup, no extra fees. - [REG121 Plans, Billing, and Account Management Guide](https://docs.reg121.com/platform/account-and-billing.md): Compare Free, Pro, and Agency plans, understand what's included in each tier, and learn how to upgrade or downgrade your subscription at any time. - [REG121 Frequently Asked Questions — Getting Started](https://docs.reg121.com/platform/faq.md): Answers to the most common questions about REG121 — from how sites are built to what's included in every plan and how your data is handled. - [reg121.cloud: Managed Backend for Every REG121 Site](https://docs.reg121.com/developer/overview.md): reg121.cloud is the managed backend platform included in every REG121 plan — Postgres storage, REST API, and auth infrastructure, provisioned per site. - [REG121 Site Architecture: React, API, and Postgres](https://docs.reg121.com/developer/architecture.md): Every REG121 site is a real React application backed by a per-site REST API layer and an isolated Postgres schema provisioned at site creation. - [Database & Schema: Real Postgres DDL for Every Site](https://docs.reg121.com/developer/database-and-schema.md): REG121 generates real Postgres DDL for every custom table, scoped to each site's isolated schema — not simulated or abstracted storage. - [Authentication: Per-Site End-User Auth Infrastructure](https://docs.reg121.com/developer/authentication.md): Every REG121 site ships with a complete, isolated authentication system for end users — provisioned automatically alongside the site's Postgres schema. - [Security & Isolation: Per-Site Database Boundaries](https://docs.reg121.com/developer/security-and-isolation.md): REG121 enforces isolation at the database level — each site operates against its own Postgres schema, with no structural path between sites. - [REST API Reference: Per-Site Data Access on reg121.cloud](https://docs.reg121.com/developer/rest-api-reference.md): Programmatic access to your REG121 site's data via its auto-provisioned REST API, scoped exclusively to that site's isolated Postgres schema. - [REG121 Limitations: What the Platform Is Not Designed For](https://docs.reg121.com/developer/limitations.md): A direct scoping guide for developers evaluating REG121. Understand the architectural boundaries before you build so you can make the right tool choice.