# Modular Chains Beget Modular Clients | Justin Florentine - Besu

- Channel: [Ethereum Denver](https://streameth.org/ethereum-denver)
- Date: 2025-10-09
- Duration: 18:36
- Topics: ETHDenver, Crypto, Web3, Blockchain, Event, Conference, ETHDenver 2025, ETHDenver 2024, Bitcoin, Ethereum
- Watch: https://streameth.org/watch/yt-g9Lb9paoR4A
- YouTube: https://www.youtube.com/watch?v=g9Lb9paoR4A

## Description

Ethereum execution clients are becoming more and more configurable and extensible every day. As Ethereum diversifies into app-specific chains, L2s, sidechains, parachains etc, execution clients have begun to expose more and more of their functionality for extension by developers.

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