This book is for those who are interested in all the latest features of the modern web. On top of this, it's also for those with an interest in reducing memory costs while increasing speed. People who are interested in how a computer works and even how a JavaScript compiler works will be interested in the contents of this book. Finally, for those who are interested in WebAssembly but do not know where to start, this is a good jumping-off point in learning the essentials.