This project provides a comprehensive analysis of cloud computing solutions tailored for Smith Security, a company with diverse security businesses across Australia. The assignment evaluates the company's current IT infrastructure, highlighting the need for modernization due to outdated hardware and operating systems. It explores the benefits and drawbacks of Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) models, recommending specific cloud approaches for different components of Smith Security's infrastructure. The project suggests IaaS for web servers and PaaS for SQL databases, considering factors like security, scalability, and cost-effectiveness. It also compares the three cloud models, detailing their characteristics, advantages, and disadvantages, and ultimately recommends SaaS for business applications due to its cost-effectiveness and ease of access. The project aims to provide a practical roadmap for Smith Security's transition to the cloud, addressing their specific needs and concerns.