Your organization is planning to deploy a new server infrastructure that includes multiple platforms and operating systems, aiming to host critical applications that process sensitive customer data. As a cybersecurity architect, you are tasked with specifying the security requirements for these servers to ensure compliance with industry standards and protect against evolving threats. Considering the diversity of platforms and operating systems, cost-effectiveness, and the need for scalability, which of the following approaches should you take to ensure the security of these servers? (Choose one)