A university needs to increase CPU and RAM on existing virtual servers without adding more servers. Which scaling approach describes this?

Vertical scaling, also known as "scaling up," involves increasing the resources (like CPU, RAM, or storage) of an existing server. The university's need to add more CPU and RAM to current virtual servers without adding new ones perfectly matches this definition. Horizontal scaling ("scaling out") would involve adding more servers to distribute the load, which is contrary to the requirement. Elastic scaling refers to the ability to automatically scale resources up or down based on demand, which is a characteristic of cloud computing but not the specific scaling approach described here. Agile scaling is a project management methodology and not a technical scaling approach for servers.