A robust and secure IT infrastructure ensures reliable security, high speeds and connectivity, employee support and accessibility, and a positive user experience for clients. It is hard to manage a modern firm without a secure and adaptable IT infrastructure. Technology, when properly set up and networked, can improve back-office processes, increase efficiency, and simplify communication. This research explores how an organization assure the optimum level of infrastructure security in in three domains: network infrastructure security, physical infrastructure security, and cloud infrastructure security. Running a network infrastructure model comes with a variety of difficulties. The findings suggest that there are few recommendations for assuring right security level for the network infrastructure, including: conducting a network security assessment, keeping user access privileges to a bare minimum for work, updating programs, investigating cybersecurity tools and Increasing cyber-awareness. Physical infrastructure security is also crucial. We divided he dangers are divided into the following categories and suggested for appropriated measure: threats by environment, threats by technical infrastructure, threats by humans, inappropriate humidity and temperature, Electrification, Electromagnetic Interference (EMI), Unauthorized physical access. Cloud security is necessitated by the widespread adoption of cloud technology, as well as an ever-increasing volume and sophistication of cyber attacks. To ensure the right level of cloud security, this research recommend to take some measures, including: Transit and Rest Protection, Asset Security. Securing User Management, Integration of compliance and security, Authentication and Identity, and Operational Safety and Security While no amount of security will ever stop all attacks, organizations can significantly minimize risk of suffering a breach and the fallout from such attacks by taking a few critical steps to secure business’ network, physical and cloud infrastructure.