What exactly is an "album" in Snaptide terms?

Think of an album as one event or one shoot bundled into a single container. It holds the photos, obviously, but also the event name and date, the description guests see, the location, the download rules you've set, the branding, the share links and the list of registered guests. So when people say "the wedding album," they mean the whole delivery package for that wedding — not just a folder of JPEGs. Everything about that event lives in one place, which makes life much simpler when you're juggling ten events at once.