iCloud: What is iCloud Contacts?
You can keep your contacts organized and easy to find using Contacts on iCloud. Changes you make appear automatically wherever you set up iCloud for Contacts. You never have to connect your device to your computer to keep your contacts current.
On iPhone, iPad, iPod touch, or Mac: Changes appear in the Contacts app.
On Windows: Changes appear in Microsoft Outlook.
Each contact appears on a virtual card called a vCard. You can share vCards with others, and you can add vCards that are shared with you. See Export a contact as a vCard from iCloud Contacts and Import a contact into iCloud Contacts.
To use iCloud Contacts, go to icloud.com/contacts and sign in with your Apple ID (if you’re not signed in already).
If you’re already using another iCloud feature, click the feature’s name at the top of the iCloud.com window, then click Contacts.
When using iCloud Contacts, make sure you use a browser recommended in the Apple Support article System requirements for iCloud.