Consider the basic cloud service models (SaaS, PaaS, IaaS etc.) and discuss which cloud delivery model would be best suited for the examples in the following scenario. Justify your answer: a) XYZ is a large real estate firm. Their core competence is their understanding of the real estate market, and their understanding of their customers and the customer needs. Their most critical tools are their CRM and email servers. They are growing, and so is their customer list and their IT and marketing costs are growing at an alarming rate. They currently use managed services to run their CRM, email, etc software but they have had to deal with significant delays as cach growth spurt is bogged down by the time and cost it takes to provision new servers, install the software, test it and bring it online. Which cloud delivery model would be best suited for them? Justify your answer. b) . ABC is a mid-size animation company that has historically worked on some of the major animation movies in the last few years. Their core competence is their animation engineers, and their very talented IT staff that manages their server farms and develops new versions of their custom animation software. When they are working on a particular animation sequence, their typical development cycle involves large spikes in computing and storage usage, as they render each section and each version. Over the years, as animations have become more sophisticated, these spikes have become larger and more unpredictable as they start pushing the boundaries of what is computationally possible. Consequently, they have seen their hardware and IT costs increase at a rapid rate in order to service the rendering spikes, while sitting idle the rest of the time. Which cloud delivery model would be best suited for them? Justify your answer. c) PTL is a relatively young high tech company that provides a specialized location based service. Their platform is relatively straightforward: Web servers, application servers, databases, JavaScript and Python. They also require connectivity to some external services such as mapping and location software. As their customer base is growing, their IT provisioning is not able to keep up. Which cloud delivery model would be best suited for them? Justify your answer.