Does it cost money to transfer between google clou

Question

I am interested in running some code on Google's Compute Engine (or App Engine) that will read data from Google Cloud Storage and write it into Google Drive.

It appears from Google's pricing pages that accessing Google cloud services in the same region does not incur network transit costs (see https://cloud.google.com/storage/pricing), but what is left unclear to me is if Google Drive is considered to be a cloud service in the same region or not.

Can anybody answer definitively (with reference preferably) if transferring data from Google Cloud Compute/App Engine into Google Drive is free of charge?

Answer 1

Transferring data from Google Cloud Storage to Google Drive using Google Compute Engine consists of two separate operations:

1. Downloading objects from GCS to GCE. As documented on the GCS pricing page, network egress to a Google service in the same region (GCE is a Google service) will be free. For example, downloading from a GCS US bucket to a GCE VM in us-central1-a will be free. Downloading from a GCS EU bucket to a GCE VM in us-central1-a will incur charges. Downloading from a GCS regional bucket located in US-CENTRAL1 to a VM in us-central1-a will be free. Downloading from a GCS regional bucket located in US-CENTRAL1 to a VM in asia-east1-a will incur charges.
2. Uploading to Drive from GCE. As mentioned on the GCE pricing page, network egress from a VM to Google products (Drive is explicitly listed as an example) is free.