Slides before the session, not only after
Most hosts put the deck up afterwards, and miss the more valuable timing. Adding the outline or an empty worksheet to the page in the days before the session changes who turns up prepared: people arrive having read something, questions get sharper, and the hour stops being spent on context nobody needed to hear twice.
You do not have to hand over the finished deck early for that. A one-page agenda with the chapter titles and durations is already pre-work, and it lives naturally in the agenda section the page builds anyway. Then after the session, the full deck replaces it in the materials field, and the address people already saved still points at something.