There was not a lot of coding in this chapter, but we covered a vital aspect of building decentralized applications. Knowing the different Ethereum clients out there and how to use them will support you when you build more Dapps.
Remember, an Ethereum client is just software that has implemented the Ethereum protocol, which allows it to gain access to a network, post transactions, mine, and more. It allows you to be the node on the blockchain network.
The next chapter will be more fun; we will learn how to successfully migrate your app to Ethereum networks of your choice.