Which of the following best describes a third-party IT support’s role in managing cloud services?

A third-party IT support's primary role in managing cloud services is to provide necessary maintenance and support. This encompasses a range of activities that ensure the cloud services operate smoothly and efficiently. This includes troubleshooting issues, performing updates and upgrades, monitoring system performance, and ensuring that services remain available and functional for users.

While third-party IT support may have some level of access to administrative functions, the control over administrative access typically remains with the cloud service provider or the organization using the service. Guaranteeing complete security of infrastructure is a significant responsibility that involves multiple layers of practices and controls, often beyond the scope of a single third-party provider. Lastly, developing custom software solutions is not a standard function of third-party IT support focused on cloud services; this role is usually more aligned with software development teams rather than IT support. Thus, providing maintenance and support is the most accurate description of their role in this context.