> For the complete documentation index, see [llms.txt](https://docs.etherscale.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.etherscale.xyz/core-concepts/rollup-as-a-service/existing-problems-with-raas.md).

# Existing Problems with RaaS

1. **Centralization**: Many RaaS solutions rely on centralized sequencers, which can lead to censorship and single points of failure.
2. **Security**: The absence of robust security measures in some RaaS offerings can lead to vulnerabilities and potential exploits.
3. **Limited Ecosystem**: Existing RaaS solutions often lack comprehensive ecosystem support, such as cross-rollup communication, versatile wallet integration, and robust oracle services.
4. **Chain Dependence**: Many RaaS solutions are tied to specific blockchains, limiting flexibility and adaptability.<br>