WebGIS publishing platforms like MapStore, are usually very feature-rich, to cover a lot of different scenarios, from the QGIS-like do-it-all web application, to a simple interactive map for a company website. This comes with an important trade-off: even when removing most of the unneeded functionalities for the simplest use case, the cost of the platform needed to run your maps can be overwhelming. The problem here is that a single platform is not always the best choice for every kind of usage. This talk shows how to use the popular MapStore platform as an application builder, to publish interactive maps that can run on a very light engine, de facto scaling down a quite heavy platform to the needs of performance and simplicity that better suit a lot of general user oriented applications and websites. We will start by creating a map from different data sources, using MapStore, then we will export the map and publish it to our alternative light engine. We will then highlight all the advantages this approach can offer. Finally we will give some insights on the technical aspects of this project.