Design Thinking framework, 5 steps:
- Empathize
 - Define
 - Ideate
 - Prototype
 - Test
 
Not linear, but iterative. Repeat certain phases as refine the design.
Ref:
- Design Thinking 101, https://www.youtube.com/watch?v=6lmvCqvmjfE
 - The Design Thinking Process, https://www.youtube.com/watch?v=Tvu34s8iMZw
 - UX Design Process: Everything You Need to Know, https://xd.adobe.com/ideas/guides/ux-design-process-steps/
 - What is Design Thinking? https://www.interaction-design.org/literature/topics/design-thinking