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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, 2021 at 17:01