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I have read several tutorials and I know the subscriber key and contact key are USUALLY the same (correct?)
I read that typically it should NOT be an email address cause email address can change - but how does one generate a unique contact key EXACTLY? Where does it come from? If someone creates an account on a website - does the system automatically generate a unique contact key for that individual? I was just wondering - thanks!
You have to provide the value for subscriberkey/contactkey. Typically this would be the uniqueid you have for a subscribers.
An example of this would be
Subscriberkey ALWAYS = Contactkey
For clarity on the difference between Subscribers and contacts
Differentiating between contacts and subscribers is important when using multiple Marketing Cloud channels.
A contact is a person you send messages to through any marketing channel. A contact typically appears in the All Contacts section, but a contact record can also appear in other locations.
A subscriber is a person who opted to receive communications or belongs to a particular channel. A subscriber lives in the individual studios. Subscribers can be imported or created manually and are stored in data extensions.
Contact Key then the servers will automatically generate a random UUID for your contact. When you set one in your application via the SDK the randomly generated ID is replaced with the value you assign.
Aug 4 at 17:01