This exercise is intentionally left open ended. Within you will find a skeleton code base and a json file intended to simulate a database.

• API listing all customers
• API retrieving a customer
• API adding a customer
• API updating a customer
• Unit tests
• Use .NET Core 3.1 or NET 5+

Implement the above listed requirements in a manner you see fitting. Demonstrate design and implementation aspects you feel are important in a software project.

Publish your implementation under your own github account.