&quot;don&#x27;t require them&quot;.... Transactionlity is principally dicated by the requirements to the architecture design, not the other way around.<p>&quot; isolate to one service &quot; Yep, a single service with a single database, as mentioned.<p>My point here, like the earlier one, is that there are a lot of situations where multiple services don&#x27;t fit the domain. In fact, very many, given the extreme complexity around transactions.