Network Cost Forensics: Tracing Data Transfer Charges Using VPC Flow Logs and DNS Query Correlation

Ever received a surprise Data Transfer Out charge on your AWS bill and wondered — which resource caused it, where was data sent, and was it legitimate? In this webinar, we walk through a systematic four-step methodology to investigate network-related billing line items by correlating data across AWS Data Exports (CUR 2.0), VPC Flow Logs, and Amazon Route 53 DNS Query Logging. Using a real-world Data Transfer Out investigation, you'll learn how to: Pinpoint the exact resources driving unexpected network charges using CUR 2.0 and Athena Correlate network activity patterns and data flows through VPC Flow Logs Identify external destinations and domain resolution patterns via Route 53 DNS Query Logs Synthesize findings into actionable root cause analysis — distinguishing legitimate application traffic from misconfigurations or security incidents Whether you're a FinOps professional, DevOps engineer, or security analyst, this session equips you with a repeatable network observability playbook to move from reactive billing surprises to proactive cost control.