I wanted to share our successful implementation of Private Service Connect (PSC) for secure BigQuery data ingestion from our on-premises data center. We had strict security requirements preventing direct internet access to GCP services, and PSC solved this elegantly.
Our scenario: Financial services company with sensitive customer data residing in on-prem Oracle databases. Need to replicate data to BigQuery for analytics while maintaining network isolation and compliance with data residency requirements. Previously used Cloud VPN with Cloud Router, but latency was inconsistent (50-150ms) and throughput limited.
With PSC, we established private connectivity to BigQuery APIs through our existing Cloud Interconnect. The setup involved creating service attachments and configuring private endpoints in our VPC. Now our ETL jobs connect to BigQuery via RFC 1918 private IP addresses, never traversing the public internet.
Results: Latency dropped to consistent 5-10ms, data transfer speeds increased 3x, and we passed security audit without any exceptions. The architecture also simplified our firewall rules significantly. Happy to detail the implementation steps if others are working on similar hybrid cloud data warehouse architectures.
Great questions. PSC and VPC Service Controls serve different purposes - we actually use both. PSC provides the private network path, while VPC SC creates the security perimeter around BigQuery datasets. Together they give defense in depth: PSC ensures traffic stays private, VPC SC prevents unauthorized data access even if credentials are compromised. For encryption, BigQuery’s default TLS 1.3 was sufficient for our needs, but you can add application-level encryption with Cloud KMS before loading data if required by your compliance framework.
From a compliance perspective, this setup sounds ideal. Can you share how you documented the data flow for auditors? What logging and monitoring did you implement to prove that data never touches the public internet? We need to demonstrate compliance with GDPR and PCI-DSS, and having a clear audit trail of private connectivity would be valuable. Also, how do you handle disaster recovery scenarios - does PSC support multi-region failover?
The latency improvement is impressive. Were there any gotchas during implementation? We’re planning a similar setup for our data warehouse migration and want to avoid common pitfalls. Specifically concerned about DNS resolution for BigQuery APIs through private endpoints and potential issues with client library compatibility. Did you need to modify any application code or were the client libraries transparent to the private connectivity?
This is exactly what we’ve been evaluating! Can you elaborate on the security benefits beyond just private IP addressing? How does PSC compare to VPC Service Controls for data exfiltration protection? Also, did you implement any additional encryption beyond the default TLS for data in transit?
Kevin, how complex was the PSC setup compared to standard Cloud Interconnect? We have 10Gbps Dedicated Interconnect already established. Does PSC require any changes to the physical connection or is it purely a configuration layer on top? Also curious about the cost implications - any additional charges beyond the base Interconnect fees?