Network Costs

When AWS network costs increase, the root cause is rarely obvious from the billing dashboard. Cost Explorer might show higher data transfer charges or increased NAT Gateway processing fees, but it rarely explains which workloads actually generated the traffic. In multi-account AWS environments this problem becomes even harder to diagnose. Platforms built on landing zone … Read more

In many AWS architectures, engineers try to reduce NAT Gateway usage by introducing VPC endpoints. The assumption is simple: if workloads running in private subnets communicate with AWS services such as S3 or DynamoDB, the traffic should remain inside the AWS network rather than exiting through the internet. In practice, endpoint architecture often introduces its … Read more

Route53 and DNS Architecture Costs in Multi-Account AWS Platforms DNS is rarely the first thing engineers investigate when AWS costs increase. Most cost discussions focus on compute, storage, or obvious networking components such as NAT Gateways or load balancers. DNS usually remains invisible because it “just works” as part of the underlying platform. However, in … Read more

Many AWS teams first discover network costs only after their monthly bill increases unexpectedly. Unlike compute or storage, data transfer charges are distributed across multiple services and rarely appear as a single obvious cost component. Traffic between services, Availability Zones, and VPCs is often treated as “internal AWS networking,” which leads engineers to assume the … Read more

Many AWS organizations adopt a landing zone architecture to standardize account structure, security controls, and network connectivity across their cloud environments. In these setups, workloads are distributed across multiple AWS accounts. Application platforms, data pipelines, and shared infrastructure often run in separate VPCs connected through centralized networking components such as Transit Gateway or shared networking … Read more

Modern cloud platforms are increasingly built around microservice architectures. Instead of a single monolithic application, systems are composed of many smaller services that communicate through APIs. In AWS environments, this pattern is common across platforms such as API ecosystems, internal application systems, and data platforms. Services interact with each other frequently, exchanging requests, responses, and … Read more

As AWS environments grow beyond a single account, networking architecture becomes one of the most important structural decisions in the platform. In many organizations adopting an AWS landing zone model, workloads are deliberately separated across accounts. API services, internal applications, and data platforms often operate in different VPCs to isolate responsibilities and reduce operational risk. … Read more

n many AWS environments built on a landing zone architecture, outbound internet access is often centralized. Instead of allowing every application VPC to deploy its own NAT gateway, organizations route outbound traffic through a dedicated network account. This design is common in multi-account environments because it simplifies governance, logging, and security controls. For example, a … Read more

In many AWS architectures, load balancers sit directly in the path of almost every request. They distribute traffic across application instances, isolate services behind stable endpoints, and simplify scaling. Because of that central role, load balancers also become a major point where network traffic accumulates. In platforms built around microservices — such as an API … Read more

In many AWS architectures, workloads run in private subnets and still need to communicate with services outside their VPC. The default solution is usually a NAT gateway. It works well for simple environments, but in larger platforms the amount of traffic passing through NAT can become surprisingly large. This pattern appears frequently in systems such … Read more