Amazon Web Services is the world’s largest cloud computing platform, launched in 2006 and operated by Amazon.com from Seattle, Washington. It holds approximately 31% of the global cloud infrastructure market and offers over 200 fully featured services across compute, storage, databases, networking, analytics, machine learning, security, and developer tools. AWS serves organizations of every size — from individual developers running side projects to governments and enterprises operating mission-critical global systems.
AWS pricing is usage-based and has no upfront cost or monthly commitment at the base level. The foundational model is pay-as-you-go: you pay only for the resources you consume, metered at the second or GB level depending on the service. Compute is typically the largest cost driver. An on-demand EC2 t3.micro instance (2 vCPU, 1GB RAM) costs approximately $7.59/month in US East (N. Virginia). A production-grade m5.xlarge (4 vCPU, 16GB RAM) runs approximately $140/month on-demand, or $84/month with a Compute Savings Plan. Savings Plans and Reserved Instances offer up to 72% discount over on-demand pricing in exchange for 1 or 3-year commitments. Spot Instances offer up to 90% discount for interruptible workloads.
New accounts created after July 15, 2025 receive up to $200 in credits (replacing the previous 12-month free tier model). Always-free tiers exist permanently for a subset of services including 1 million Lambda requests/month, 25GB DynamoDB storage, and 5GB S3 standard storage.
The most commonly overlooked costs are data transfer fees (outbound data from AWS to the internet), NAT Gateway costs (~$33/month simply for being active), and unattached EBS volumes or idle resources that continue billing after the instance they supported is terminated. Flexera’s 2025 State of the Cloud Report found that 84% of organizations struggle to manage cloud spend, and the majority of AWS bills include 10–30% of waste from idle or over-provisioned resources. AWS Cost Explorer, Compute Optimizer, and billing alarms are free tools that help identify and address this waste.
