A company is evaluating its communication infrastructure and is considering three deployment models: On-Premises, Cloud, and Hybrid. They have a workforce that is split between remote employees and those working in a central office. The IT team is tasked with determining which model would best support their needs for scalability, security, and cost-effectiveness. Given the following considerations: the need for rapid scaling during peak business hours, the importance of data security due to sensitive client information, and the budget constraints that limit upfront capital expenditures, which deployment model would be most suitable for this scenario?