As you’re likely discovering, the iCloud.com website is impressively full featured, with complete access to email, contacts, notes, reminders, calendar, iCloud Photos (and the only way to download photos from iCloud directly on a PC too), documents saved in iCloud, and even Pages, Keynote, and Numbers apps that run within a web browser. The ...
Official Apple Support
After you set up your @icloud.com email address, you can use it to sign in to iCloud and add your account to Outlook. You can also sign in using the Apple ID you used to create your iCloud account. Two-step verification