How Big Enterprises Manage Network Traffic Across Multiple AWS Accounts
Managing network traffic across multiple AWS accounts is one of the biggest challenges large enterprises face today. As organizations scale, they adopt multi-account structures for security, compliance, and operational efficiency. But with growth comes complexity—especially in networking. In this article, we’ll explore how big enterprises handle this complexity and ensure secure, optimized, and cost-effective traffic flow across accounts. Why Enterprises Use Multiple AWS Accounts Large companies rarely operate in a single AWS account. Instead, they typically maintain dozens—or even hundreds—of accounts. Some common reasons include: Security isolation (e.g., separate prod, dev, QA accounts) Compliance requirements (e.g., PCI, HIPAA, SOC) Cost allocation and business unit separation Risk reduction by isolating workloads Scalable governance through AWS Organizations According to AWS, over 90% of enterprise customers use a multi-account strategy for better cloud...