Case Study: Company ABCD has been using Cloud Computing from the beginning of their business. Since business is Blooming

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Case Study: Company ABCD hasbeen using Cloud Computing from the beginning of their business.Since business is Blooming, they are planning to scale their cloud.Company ABCD is running a business that deals with a very hightraffic spikes every day. Therefore, when they decide to move theyneed to make sure that any scalability method chosen must beaccomplished without any downtime if possible. Or in other word thescaling method must have the high availability of services. CompanyABCD also looking into easier and automatic management when theircloud has been scale.
Question: Based on the case study below, suggest betweenOne form the two types of the Cloud Scaling method available(Vertical & Horizontal). Justify your answer in term of why youchoose that particular method for scaling, what is the advantages(Users and response time), what is the limitations and your ownpoint that you think is appropriate.