Microsoft have a very interesting approach with their Office suite when it comes to cross-platform development. They go through it in some detail in this talk:

Microsoft have a very interesting approach with their Office suite when it comes to cross-platform development. They go through it in some detail in this talk: https://www.youtube.com/watch?v=MGMoRu5yrVc https://www.youtube.com/watch?v=MGMoRu5yrVc