What is meant by "microservice on demand"?

The concept of "microservice on demand" refers to independently scalable microservices that can be deployed and executed based on the current needs of the application or system. This means that when demand increases, additional instances of the microservice can be created to handle the load, and when demand decreases, these instances can be reduced or shut down entirely.

This approach allows for efficient resource utilization, ensuring that system performance is optimized without over-provisioning resources when they are not needed. It embodies the core principles of microservices architecture, including scalability, flexibility, and resilience, allowing organizations to respond quickly to varying workloads while maintaining performance and cost-effectiveness.

In contrast, the other options either misinterpret the concept or fail to capture its core essence. For instance, microservices deployed only during peak hours do not fully address the aspect of scalability based on real-time demand fluctuations. Similarly, microservices that require no resources is impractical, as all microservices require some computing resources to function. Lastly, microservices with reduced functionality do not showcase the adaptability and scalability intended by the "on demand" concept.