> For the complete documentation index, see [llms.txt](https://docs.lumia.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lumia.org/ecosystem/raas-and-the-lumia-chain-stack.md).

# RaaS and the Lumia chain stack

**Who this is for:** developers evaluating the chain stack Lumia is built on, or asking whether Lumia offers Rollup-as-a-Service (RaaS) to launch a separate chain.

### The chain stack

Lumia is built on the Polygon CDK and settles through AggLayer. What that stack looks like on Lumia itself is documented at [`/lumia/architecture/polygon/cdk`](https://app.gitbook.com/s/chmhPiVNAafGw48c4oU2/ecosystem/lumia/architecture/polygon-cdk-and-agglayer/what-the-lumia-chain-is-built-with), with relevant repositories at [`/build/cdk-repos`](https://app.gitbook.com/s/chmhPiVNAafGw48c4oU2/build-on-lumia/cdk-repositories).

### Rollup-as-a-Service (RaaS)

{% hint style="warning" %}
**Lumia does not offer a Rollup-as-a-Service product today.** There is no productised way for a third party to launch its own chain using Lumia's CDK setup or infrastructure.
{% endhint %}