If you've landed on monarchnc-my.sharepoint.com, you're looking at a Microsoft SharePoint login page for a specific organization. It's not a standalone website or a store. The page immediately redirects to login.microsoftonline.com, which is Microsoft's official authentication service. That's exactly how trusted Microsoft 365 tenants work.
For a login page, this setup is spot on. The connection is encrypted, the site enforces HTTPS, and it's hosted on Microsoft's own infrastructure. There are no red flags like blacklist entries or malware warnings. The robots.txt file blocks crawlers, but that's expected for a login page that shouldn't appear in search results.
The only thing to watch for is making sure you're on the right tenant URL. If your company or school uses SharePoint, this is the normal sign-in flow. If you weren't expecting this page, don't enter any credentials until you confirm the tenant name matches your organization. But the site itself is safe and legitimate.