Author: Sam Ruskin, Messari Research Analyst; Translator: 0xjs@黄金财经
In this article, we will introduce some of the most exciting AVS that utilize the EigenLayer re-staking pool.
AVS is any system that requires its own decentralized verification, such as a sidechain, data availability layer, or oracle. Using EigenLayer, these systems can use Ethereum's Proof of Stake (PoS) security to protect their services without the need for their own separate validators. This allows AVS systems to benefit from the security of Ethereum while running their own decentralized applications or services.
So what exactly is an AVS like? Here are some exciting AVS that I have been keeping an eye on:
EigenDA
EigenDA, developed by EigenLabs, is the first active verification service (AVS) launched on EigenLayer. It works similarly to other data availability (DA) layers such as Celestia or NearDA, and Rollups leveraging EigenDA can enjoy lower fees and higher throughput

Omini
As more and more Rollups are built on Ethereum, the problem of liquidity fragmentation is becoming increasingly serious, resulting in an isolated ecosystem, inefficient transactions, and poor user experience. The Omni protocol aims to address these fragmentation challenges by enabling cross-Rollup communication, unifying liquidity pools, and simplifying the user experience.

Witness Chain
Similar in concept to Omni, Witness Chain aims to unify the isolated DePIN economy by turning physical properties (location, computing power, network, storage, energy, etc.) into verified digital proofs.