> For the complete documentation index, see [llms.txt](https://docs.lambda.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lambda.im/ecosystem/lda-permanent-da-solution.md).

# LDA Permanent DA Solution

## Lambda DA

LDA (Lambda Data Availability), based on the Ethereum Dencun upgrade and EIP-4844, aims to fundamentally change the way data is stored and accessed on Ethereum by providing a persistent, efficient, and fully verifiable data availability layer for RollAPPs through Lambda Modular Storage technology.