Build on the Microsoft 365 Platform

There are multiple aspects that would be of interest to developers in the Microsoft 365 platform as has been expounded during Microsoft Build 2018

The list of key sessions delivered for developing on the Microsoft 365 platform are at Build-2018-Updates

Apart from the keynotes there are about 45+ sessions listed on topics like Microsoft Graph, Fluent Design System, Adaptive Cards, Mixed Reality and Teams

For a summary on this topic you could also check out the article here