I think the author does a great disservice lumping together deploy, test, and dev sandbox tools under 'build tools'. They are different scenarios which all happ

I think the author does a great disservice lumping together deploy, test, and dev sandbox tools under 'build tools'. They are different scenarios which all happen to require a built copy of the code. There's no fundamental reason for them to use the same tool, except the inertial tug of whatever build tool your project happens to use.