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 managea modern firm without a secure and adaptable IT infrastructure. Technology, when properly setup and networked, can improve back-office processes, increase efficiency, and simplifycommunication. This research explores how an organization assure the optimum level ofinfrastructure security in in three domains: network infrastructure security, physical infrastructuresecurity, and cloud infrastructure security. Running a network infrastructure model comes with avariety of difficulties. The findings suggest that there are few recommendations for assuring rightsecurity level for the network infrastructure, including: conducting a network security assessment,keeping user access privileges to a bare minimum for work, updating programs, investigatingcybersecurity tools and Increasing cyber-awareness. Physical infrastructure security is also crucial.We divided he dangers are divided into the following categories and suggested for appropriatedmeasure: 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 cloudtechnology, as well as an ever-increasing volume and sophistication of cyber attacks. To ensurethe right level of cloud security, this research recommend to take some measures, including: Transitand Rest Protection, Asset Security. Securing User Management, Integration of compliance andsecurity, Authentication and Identity, and Operational Safety and Security While no amount ofsecurity will ever stop all attacks, organizations can significantly minimize risk of suffering a breachand the fallout from such attacks by taking a few critical steps to secure business’ network, physicaland cloud infrastructure.