But, we realize that for people who don’t build web browsers (and that’s most people!), it can be hard to see just why some of the changes we’re making to Firefox are so significant. After all, many of the changes that we’re making will be invisible to users.
With this in mind, we’re kicking off a series of blog posts to provide a deeper look at just what it is we’re doing with Project Quantum. We hope that this series of posts will give you a better understanding of how Firefox works, and the ways in which Firefox is building a next-generation browser engine made to take better advantage of modern computer hardware.
... read the whole story at hacks.mozilla.org.