One of the key highlights of a cloud environment is the ability to scale resources on a demand basis and pay only for what is being used. This chapter focuses on the design considerations and configuration options to scale up or scale out environments hosted in Azure.
Scale up vs. Scale Out
Vertical scaling, or scale up, is the scenario in which the compute capacity of VMs is increased by switching the instance SKUs to a higher spec version when there is a surge in resource utilization (for example, during peak hours). ...