I have been researching TDE(as my understanding is that FLE is going away) for Marketing Cloud, and came across this Link. It mentions "TDE within the Marketing Cloud environment requires a dedicated database. Existing customers on a multi-tenant database need to migrate to a single-tenant database to implement TDE." Is this true? I am looking at this Stack Exchange Question/Answer, and it mentions getting a new MID. Is getting a new MID the process of going from Multi Tenant to a Single Tenant Database? Any information about this process would be greatly appreciated!

1 Answer 1


Since the TDE is at DB level, it can't be either or when you share a DB with other environments - as some of them would need TDE, others would not. So the only option here is to move to a new shared DB which has TDE enabled - for all tenants. This operation is indeed also a DB migration, since the content of your old DB needs to be replicated to the new TDE enabled instance - so do expect some downtime while data is moved. As this is a different instance, your MID(s) will also change. I am not into all the specific details, as I am yet to experience such a migration first hand.

  • is this still the case? I've worked on an account on a shared DB and the MID did not change. Would this simply mean that it was already on a DB that had TDE enabled? And if on a shared DB, would all tenants share the same key? Aug 23, 2022 at 17:19
  • @AntonioDePalma - I suspect that all the tenants on a shared DB with TDE share the same key. This is due to the fact, that you can't bring your own key, as you normally can on a dedicated DB with TDE. Aug 24, 2022 at 6:47

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