SSIS is not dead, far from it. This article: Dynamics 365: Data Migration with SSIS KingswaySoft and PowerPack is a tutorial showing you how to use this technology and accelerators to facilitate data migration.
Microsoft Power Fx is the name given to the language used in Formulas in Canvas Apps. Microsoft is investing in this language to make it not only available in the formulas of Canvas Apps, but in several other places too. Today, we take a Microsoft Power Fx Overview on this new features ! And they look very promising !