PowerPoint is great for a classroom presentation, but not for online presentations.
Uploading a PowerPoint slideshow into your Moodle course is easy for the instructor, but creates inconvenience for Students: Studentas must download the slideshow (which could be a large file), and then need PowerPoint or some compatible player/viewer program in order to watch it.
Converting PowerPoint to video
Converting your slideshow into a video makes it much easier to view online in any web-connected device, with less action required by the viewer.
This article (and video) from Microsoft details how to export your powerPoint slideshow as an MP4 video file.
Where to host your video
Once you've created a video file, VCC's Kaltura video host system is the perfect place to store it for distribution to VCC Moodle or other VCC web sites.