You need to migrate a 10 TB on-premises database export to Cloud Storage over a 1 Gbps link, minimizing total time and cost following Google best practices. What should you do?

Uploading the data over the network using gcloud storage cp is the most suitable option. A 10 TB dataset over a 1 Gbps link would take approximately 22 hours to transfer (10 TB 8 bits/byte / 1 Gbps = 80,000,000 Mbps / 1,000 Mbps = 80,000 seconds = ~22 hours). This is a reasonable timeframe for a one-time migration, minimizing both cost (no additional hardware or services) and complexity. Developing a Dataflow job would add unnecessary complexity and development time for a simple data transfer. The Data Transfer Appliance is designed for much larger datasets (petabytes) or situations with extremely slow network links, making it overkill and more expensive for 10 TB over 1 Gbps. Using a commercial ETL partner would introduce additional cost and potential vendor lock-in without providing significant benefits for this specific scenario.