This chapter introduced the scenario of an online bookseller, FlixOne, wanting to build an application for managing their inventory. The chapter covered a range of patterns and practices that the development team can use while developing the application. The team used MVP to help keep the scope of the initial delivery to a manageable level and to help focus the business onto determining the requirements that had the maximum benefit to the organization. The team decided to use TDD to validate that the delivery matches the requirements and to help the team measure progress. The basic project, as well as the unit testing framework, MSTest, was created. The team also used SOLID principles to help structure the code in a way that will both help readability as well as the maintenance of the code base, as new enhancements to the application are added. The first Gang of Four pattern, the Abstract Factory design pattern, was used to provide a base for all inventory commands.

In the next chapter, the team will continue to build the initial inventory management project to fit the requirements defined in the MVP. The Gang of Four's Singleton pattern and the Factory Method pattern will be used by the team. These will be shown both with and without the mechanisms supported in .NET Core for these features.