Pay-Per-Use — AWS Cloud Practitioner (CLF-C02) Practice Questions
Pay-per-use, also described as pay-as-you-go, is the fundamental AWS pricing model in which customers are charged only for the resources they actually consume, with no upfront commitment required. The CLF-C02 exam emphasizes this model as a primary advantage of cloud computing over traditional on-premises IT, where organizations must purchase infrastructure capacity in advance regardless of actual usage. Different AWS services implement pay-per-use in different ways, such as per-second billing for EC2, per-request and per-GB-second billing for Lambda, and per-GB billing for S3 storage. Candidates should understand how this model enables organizations to convert capital expenditures into operational expenditures, reducing financial risk and allowing more flexible resource allocation.