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It could be a basic "Hello, World!" application or a complex banking solution like Stripe, but developing an application is a fascinating process. This process typically includes extensive testing and quality assurance to ensure that not only the requirements are met but also that the application is reliable enough for users to consume.
While this procedure is thorough, faults and errors do occur over time as users interact with the program, and the application must be quickly troubleshot to remedy these bugs or mistakes.