Improved Scale and Resource Utilization
Applications today are commonly scaled up by increasing the resources available to one or more deployments of the application, or they are scaled out by increasing the number of instances. Basically, we either put our application on bigger boxes, or create more instances of the application, and then load balance across those instances. In the case of a monolith, if one feature of the application requires additional scale, the application as a whole is scaled up or out.
We can, for example, have a feature that requires a lot of memory to perform its work, and only a few number of instances. Ideally this task would run on a few high memory instances. Another feature in the application might use more CPU or ...
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