Blockchain networks are built from multiple clients that communicate via a peer-to-peer (P2P) network. For a long time, the Go Ethereum client (Geth) has been the dominant force in blockchain. However, the Rust Ethereum client (Reth) is a significant challenger, being faster and more compact than the Go equivalent, costing less to run and able to handle breakneck execution speeds. Rust brings modularity and high performance to Ethereum. With Geth, it is necessary to fork the repo, but with Reth, you can add components such as consensus whilst using Reth as a library.