Which of the following is a common cloud service provider?

Amazon Web Services (AWS) is recognized as a common cloud service provider because it offers a comprehensive suite of cloud computing services, which includes infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS) solutions. AWS allows businesses to leverage scalable computing power, storage, and a vast array of additional services, such as machine learning, database management, and analytics. This extensive range of offerings has positioned AWS as one of the leading players in the cloud space, serving millions of active customers worldwide, including startups, enterprises, educational institutions, and governmental organizations.

In contrast, while Microsoft Windows is an operating system and is integral to cloud infrastructures, it does not serve as a standalone cloud service provider. Similarly, Oracle Database is a database management system, and while Oracle does provide cloud services, it is not considered a primary cloud service provider on its own. Cisco Systems, primarily known for its networking hardware, also offers cloud solutions but is more recognized in the realm of networking and security rather than direct cloud services compared to providers like AWS.