The "3 Cs" is a popular guideline for writing user stories.

 = The “3 Cs” of user stories are three criteria that help to ensure that the requirements in your story are clear, complete, and correct. These three criteria are Card, Conversation, and Confirmation1.

Card: A user story card is a placeholder for a conversation. It is a brief and informal description of a software feature written from the perspective of the end user. It captures the essence of the user’s need, without going into too much detail or technical jargon. It is usually written on a physical or digital card that can be easily moved and prioritized2.

Conversation: A user story card is not enough to convey all the information needed to develop and deliver the feature. It is meant to trigger a conversation between the product owner, the development team, and other stakeholders. The conversation is where the details, assumptions, risks, and acceptance criteria are discussed and clarified. The conversation is also an opportunity to collaborate, negotiate, and validate the user story3.

Confirmation: A user story is not complete until it has a confirmation. This is a set of criteria that define what done looks like for the feature. It is also known as acceptance criteria, and it specifies the conditions that must be met for the user story to be accepted by the product owner and the customer. The confirmation is usually written as a series of testable statements that can be verified by the development team and the product owner4.

References: = 1: 3 C’s of User Stories- Well Explained - KnowledgeHut1; 2: Understanding the three “C”s of agile User Stories - Medium2; 3: 3 C’s For Writing User Stories | 3 C’s of User Stories - PremierAgile3; 4: 3 C’s Of Agile User Stories: A Brief Summary - BarnRaisers, LLC5