WEM is the result of a tool development, meant for internal use by ZoomBIM solutions. With this tool, ZoomBIM was able to build feature rich web applications more efficiently and meet the identified customer needs, which were for their process owners to be able to modify and enhance the applications that were built for them. The development of the toolset that is now WEM started in 2009. In 2014, the team came to the conclusion that WEM had grown to be a fully featured application development and hosting platform. Therefore, the decision was made to go to market as a software company with a Model-Driven aPaaS product offering.