> For the complete documentation index, see [llms.txt](https://docs.standard.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.standard.im/standard-l3/what-is-standard-l3/modular-architecture.md).

# Modular Architecture

Standard L3s can come in different stacks depending on each deployed L2s' dedicated rollup partners and tech stack they prefer. Standard's rollup stack consists of ecosystem apps, execution, and data availability.&#x20;

## Ecosystem Apps

## Execution

Standard&#x20;

## Data Availability

Standard L3 currently uses Eigen DA to store data for L3 transactions.&#x20;