In this chapter, we discussed the advantages of integrating WebAssembly with Node.js and demonstrated how Node.js could be used on the server and client side. We evaluated an Express application that uses a Wasm module to perform calculations on accounting transactions. We then reviewed a browser-based application that utilizes Webpack to import and call functions from a C file without having to write any Wasm instantiation code. Finally, we saw how the Jest testing framework can be leveraged to test a compiled module and ensure it's functioning correctly. In Chapter 10, Advanced Tools and Upcoming Features, we'll cover advanced tools and discuss the features that are on the horizon for WebAssembly.