Mod­ern web appli­ca­tions keep grow­ing big­ger and more com­plex. The promise of Micro Fron­tends is to divide large appli­ca­tions into small, inde­pen­dent, eas­i­ly main­tain­able chunks. But how does this idea trans­late into real­i­ty? In a recent project we had to decou­ple parts of an exist­ing fron­tend that was already in pro­duc­tion. To achieve this we intro­duced Micro Fron­tends, specif­i­cal­ly webpack’s Mod­ule Fed­er­a­tion. Can we now devel­op our Micro Fron­tends inde­pen­dent of each oth­er? Or have we just increased the com­plex­i­ty of our project? In this talk I will explain how the intro­duc­tion of Micro Fron­tends into an exist­ing fron­tend went, what we learned from it and if it was worth it.