Microsoft Azure Architect Technologies (AZ-300) 2025 – 400 Free Practice Questions to Pass the Exam

Scaling out refers to the action of adding more machines or instances to an architecture to handle increased load or to improve performance. This approach allows for distributing workloads among multiple resources, thereby enhancing the application's ability to respond to traffic and maintain performance levels. Unlike scaling up, which involves adding more power (like upgrading to a more powerful server), scaling out involves increasing the number of servers or instances, which is often more flexible and cost-effective in cloud environments.

In cloud services, scaling out is commonly used in environments such as web applications and microservices, enabling them to handle variable workloads effectively. By distributing the workload among more machines, you can achieve better resource utilization and fault tolerance, as the failure of a single machine does not bring down the entire application.

Other options may imply limitations or specific conditions that do not apply universally across cloud architectures. However, scaling out itself is a straightforward concept that revolves around the ability to add more machines, making the assertion true.