What is a key advantage of using a modular approach for application composition?

The key advantage of using a modular approach for application composition is that it significantly enhances development speed and improves maintainability. This is achieved through the independent development and deployment of modules. Each module can be created, updated, and tested in isolation from the others. This reduces the complexity of code changes since developers can work on different parts of the application simultaneously without interfering with one another.

Additionally, this modularity allows teams to deploy updates more frequently and with greater confidence, reducing the time needed for comprehensive integration testing since modules can be validated independently. This leads to faster delivery of new features and patches, ultimately improving the overall efficiency of the development process and making the application more adaptable to changing business requirements.

In contrast, other options do not present true advantages of the modular approach. Reducing performance related to inter-module communication is a drawback rather than a benefit. The notion that modularity eliminates the need for testing and validation is incorrect, as each module still requires rigorous testing to ensure functionality. Lastly, while simplifying architecture can be a benefit, it is the speed and maintainability from independent module handling that is the more significant advantage in this context.