What is iCloud Contacts?
You can keep your contacts organised and easy to find in Contacts on iCloud.com.
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 on iCloud.com and Import a contact on iCloud.com.
If you are already using another iCloud feature, click the feature’s name at the top of the iCloud.com window, then click Contacts.