The idea behind my open source Trackable Entities project is quite simple: track changes to an object graph as you update, add and remove items, then send those changes to a back end service where they can be saved in a single transaction. It’s an important thing to be able to do, because it’s difficult to wrap multiple round trips in a single transaction without holding locks for a long time. On the other hand, you could break up related operations into multiple transactions, but then you lose the benefit of atomicity, which enables you to roll back all the changes in a transaction should one of them fail.
To get started with Trackable Entities for Entity Framework Core, download the NuGet package and check out the project repository. You can also clone the sample applications and follow the instructions.