Angular's Structured Directives

A structural directive is when you apply any Angular directives into an ng template instead of any other elements. So if you're applying your directive to a div, then it's not a structural directive. When you have an asterisk in front of the directive, this tellsangular that during compilation time, angular should replace that asterisk with an ng template and apply your directive there. With structural directives, you declare the structure and you don't render.