Following through on a promise made at WWDC last year, Microsoft has unveiled their Office 365 suite of applications on the Mac App Store. From what I can tell, this is the first bundle of apps on the Mac side, though you can seemingly download the individual programs you need. (This gives a small advantage over Windows’ mandatory Click to Run method, that provides everything whether you want it or not).
Up until now, Office 365 had to be downloaded directly from Microsoft; with the exception of OneNote which has been on the store for some time. You will need an active Office 365 subscription though as these are not standalone purchases. A trial is available for new customers via In-App Purchase nabbing you a 30 day test drive.
Most recently Microsoft added a dark mode and support for Continuity Camera to the Mac variant, fitting in nicely with macOS Mojave’s new feature set. You can read the press releases from both Apple and Microsoft on their respective websites.