The conceptual approach of desirable, feasible, and viable describes how to evaluate design solutions based on three criteria:

Desirable: The solution meets the needs and wants of the users and stakeholders.

Feasible: The solution can be implemented with the available resources and technology.

Viable: The solution can generate value and sustain itself in the market and environment. By incorporating human-centered design, CK is aiming to create design solutions that are desirable for its Sales team and customers, feasible with the Salesforce platform and tools, and viable for its business goals and strategy. References:

[1]: UX Designer Certification Prep: Design Thinking, Unit 3: Ideate

[2]: UX Designer Certification Prep: Design Thinking, Unit 4: Prototype and Test

 T-shirt sizing is a methodology that can be used to roughly estimate the work required for each item in a sprint backlog. It involves assigning a size category (such as XS, S, M, L, XL) to each item based on its complexity, effort, and uncertainty. T-shirt sizing is a relative estimation technique that allows the team to compare items and prioritize them accordingly. It is also a quick and easy way to get a high-level overview of the scope of work without getting into too much detail. References:

[UX Designer Certification Prep: Agile UX]

[Agile Estimation Techniques: A True Estimation in an Agile Project]