# Paddle Developer Docs — Migrate

> Moving from Paddle Classic or other billing platforms to Paddle Billing.

> For the complete documentation index, see [llms.txt](https://developer.paddle.com/llms.txt).
>
> To search these docs, send a `GET` request to `https://paddle-docs-retrieval.kapa-paddle.workers.dev/?q=<question>` with a URL-encoded question. No authentication needed. It returns a JSON array of `{content, source_url}`, most relevant first.

- [Learn](https://developer.paddle.com/migrate/learn.md): Understand what Paddle Billing is and learn more about how the migration process works.
- [Why migrate?](https://developer.paddle.com/migrate/learn/pathways.md): Learn more about what you can do with Paddle Billing and why you should migrate from Paddle Classic.
- [Plan](https://developer.paddle.com/migrate/plan.md): Learn how a migration from Paddle Classic to Paddle Billing works at a high level, and get key information about what you need to know before you migrate.
- [Full feature comparison](https://developer.paddle.com/migrate/learn/feature-comparison.md): Get a detailed breakdown of how features in Paddle Billing compare to Paddle Classic.
- [Migrate](https://developer.paddle.com/migrate/start.md): Everything you need to do when reintegrating with Paddle Billing from Paddle Classic.
- [Migrate](https://developer.paddle.com/migrate.md): Understand what Paddle Billing is, how it compares to Paddle Classic, and how to migrate.
- [Workflow mapping](https://developer.paddle.com/migrate/plan/workflow-mapping.md): Understand how the workflows you've built to integrate with Paddle Classic map to ways of working in Paddle Billing.
- [Technical data mapping](https://developer.paddle.com/migrate/plan/data-mapping.md): All the data in Paddle Classic can be mapped to Paddle Billing, but as a complete reimagining of how you work with the Paddle platform, some of the data doesn't map one-to-one.