A project manager is comparing CapEx versus OpEx in the cloud. What is a primary characteristic of OpEx?

Operational expenditure (OpEx) in cloud computing is characterized by flexible, usage-based spending. This means you pay for services as you consume them, often on a pay-as-you-go model, which allows for scalability and cost optimization. Upfront cost for infrastructure is a characteristic of capital expenditure (CapEx), where significant investments are made initially. Budgeting for hardware depreciation is also associated with CapEx, as it involves accounting for the declining value of owned assets. While annual licensing fees can be an OpEx, the most encompassing and primary characteristic of cloud OpEx is its inherent flexibility and direct correlation to usage, differentiating it from traditional software licensing models that might be fixed regardless of consumption.