To put it in learner’s terms, Mustache is a web template system. But as you would expect, it is more advanced than its counterparts and does involve a fair mix of new and old technologies and implementations. It has been primarily developed for languages like PHP, Ruby, Python, JS and so on.
Now, whenever you need to execute certain conditions or perform any loops, there is no availability of features like if and else statements and for loops, however, there are some very useful section tags for your consideration, namely, lists and lambdas. Owing to these reasons it is often referred to as a logic-less template.