Which of the following ISO 27k standards is specifically for information security controls in cloud environments?

The ISO/IEC 27017 standard provides guidelines for information security controls specifically designed for cloud service providers and cloud service customers. This standard is essential because it addresses the unique challenges and risks associated with cloud computing environments, offering best practices that help ensure both confidentiality and integrity of data.

ISO/IEC 27017 fills in the gaps found in the more general ISO/IEC 27001 and ISO/IEC 27002 standards by giving specific guidelines tailored to the context of cloud computing. The guidance includes responsibilities for both cloud service providers and clients, improving the overall security posture in shared responsibility models typical in cloud services.

By focusing on the unique aspects and risks of cloud environments, 27017 helps organizations understand how to apply security controls effectively, thus ensuring that any specific needs arising from the use of cloud technologies are adequately addressed.