(a) Consider the following scenario. Realtor is a start-up company that provides intermediary brokerage of virtual property in the Metaverse. As a company founded by enthusiasts, the company have open-sourced all its software to the community. Unlike a real-world real- estate company, Realtor does not require customer registration with real identities, and customer payment is processed through a third-party payment service. With the increasing news coverage and public attention on the Metaverse, the start-up management expects that the company will grow rapidly. Realtor plans to move all processes onto the cloud to allow their employees to have a flexible work environment. What type of cloud (private, public or hybrid) is most suitable? Please explain your choice in terms of at least 3 core differences between different types of cloud. Please provide a detailed explanation. The word limit is 600 words. (16 marks)