MuleSoft Certified Associate Practice Exam

Vertical scaling, also known as "scaling up," refers to the process of enhancing the capabilities of an existing server by adding more resources, such as increasing its compute power, memory capacity, or storage. This approach allows a single server to handle more workload, making it better able to accommodate higher demand or improved performance without the need for additional servers.

In the context of the options provided, vertical scaling specifically pertains to enhancing the resources of a single server, as indicated in the chosen answer. This method contrasts with horizontal scaling, where additional servers are introduced to manage increased load or demand. By focusing on increasing the server's capacity, organizations can often simplify their infrastructure and reduce complexity while still achieving the necessary performance improvements.

The other options involve strategies that do not align with the clear definition of vertical scaling: adding more servers refers to horizontal scaling, outsourcing IT resources is a different operational strategy, and reducing user access does not inherently improve the server's capability.