> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Shared Sequencer

> A sequencing service used by multiple rollups to coordinate transaction ordering.

# Shared Sequencer

A sequencing service used by multiple rollups to coordinate transaction ordering.

## Definition

A sequencing service used by multiple rollups to coordinate transaction ordering.

## Why it matters

Scaling concepts explain how blockchain systems increase capacity while balancing security and decentralization.

## Related knowledge

* [Data Availability](/generated/v2/glossary/data-availability) — term
* [Layer 2](/categories/layer-2) — term
* [Rollup](/generated/v2/glossary/rollup) — term
* [Throughput](/generated/v2/glossary/throughput) — term

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**Canonical knowledge ID:** `glossary:shared-sequencer`