Big thing for me and family+friends. I take photos of family events, and share albums/links once I upload.

My wife and I share photos of our kids, faces are tagged so new photos automatically go there.

You could say that OneDrive has similar features, however more people have Google accounts through Android devices, so Google is the easier option.

I find it easy to share photos with anyone - whether they have a Google account or not. I just select some pictures and you can easily create a link for it. (The link doesn't require a Google account to view.) I like to share images this way over texts, rather than sending the actual images.

Amazing. And as another reply said, 1B Android devices with Photos. I hadn't put these together!

When Facebook was newish and introduced the ability to tag others in photos, I got shivers. I deleted Facebook that weekend purely because of that.

No doubt a shadow profile of me, perhaps several, exists in the dark webs of Meta and Alphabet with no limits on use or retention, but I'm having no part. I'm now curious where the GDPR stands on tagging people with no accounts.

yes - photos is huge. Remember that it's the default photo storage/sharing app for 1B+ Android users.