Hello, please i need clarity on this. Difference between Subscriber key and Primary Key with all the answers i got i still get confused most times bc in places where I expect to see primary key i see but Subscriber Key so it gets me really lost

Hello @Ngala Manasseh,

Check this article:

https://salesforce.stackexchange.com/questions/193008/what-is-the-difference-between-primary-key-contact-id-contact-key-subscriber-k

https://sfdcfanboy.com/2018/12/02/marketing-cloud-email-specialist-certification-part-6-data-management/#:~:text=It%20is%20a%20unique%20identifier,you%20create%20an%20import%20activity.&text=Subscriber%20Key%20%E2%80%93%20Contains%20a%20value,a%20subscriber%20in%20your%20system.