# Shared Sequencer Shared sequencers can make cross-rollup interoperability faster and cheaper. Interoperability between rollups (messaging) is a separate process from the sequencer tx ordering and batching. **Drawbacks:** However depending on the number of rollups using a shared sequencer, cross-chain communication or liquidity transfers may be more efficient via third-party bridges than sequencers in some cases. Source: @ayyyeandy from The Rollup --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://qualitax.gitbook.io/interop/bridging-approaches/shared-sequencer.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.