Chaining them is also perfectly viable (still one nesting level), as long as you're not dipicting a non-existing problem ("callback hell") it's all good. I used

Chaining them is also perfectly viable (still one nesting level), as long as you're not dipicting a non-existing problem ("callback hell") it's all good. I used .call since OP used Q promises in the article - this works about as well with other libraries.