Hey @Justin_Grinstead,
As far as I know, there are no data transfer costs within a region in Google Cloud. Suppose I select the us-east4 region in MongoDB (I don’t know which zones it will use) and set up VPC peering as well. If data flows from MongoDB to my instance in us-east4, will you charge any data transfer costs?
In AWS, we know there are costs associated because Atlas may use a different availability zone than the instance we selected.
Here, it discusses the cost between zones in the same region. But what is the source of this cost?