IFTTT deals directly with hooks that web/hardware/data services provide. Think of it less of a tasker for your phone (linking events on your phone) and more of a simple tasker that links web apps/services(often without even passing through your phone). So, it will not have nearly the amount of control that Tasker has on your phone, but also does somethings that would be less possible or more complicated with tasker. Give this page a look to get an idea of the breadth of recipies: https://ifttt.com/recipes