PowerPoint is great for presenting and editing. But when you send the deck as a file, the recipient may not have the same fonts, app version, or screen setup. They may also see notes or hidden editing details you did not intend to share.
A PDF version is simpler: every slide becomes a fixed page. It opens in almost any browser, prints predictably, and is harder to edit by accident.
Use PPT to PDF for client handouts, class notes, internal read-aheads, and archived presentations.