Lucio Grenzi gave a presentation on using the Ionic framework to develop hybrid mobile applications. He discussed the advantages of hybrid apps over native and web apps. Grenzi explained that Ionic uses Apache Cordova to allow HTML and JavaScript apps to access native device functionality. He demonstrated how to install Ionic and create a basic project, and described some of Ionic's built-in UI elements like lists, tabs and navigation. Grenzi also highlighted resources like Ionic Lab and Creator for designing apps visually without code.