Thanks Mathias. I really appreciate your well thought and articulated comments.

Strong agree: Core/Supporting/Generic is a way of determining the importance/value of a domain and how we should approach or invest in it. And that will vary based on viewpoint (within and between organisations).

Strong agree: subdomain is relative to our perception and needs. Like a sub-step in a process could itself be an entire process depending on your perspective and level of abstraction.

Moderate disagree: problem/solution space are so ambiguous that I can’t get a consistent definition when talking to people about what is inside and outside of each space. Until someone writes an article giving a precise definition with examples, I’ll avoid using these terms.

Slight disagree: Wardley’s cycle is a model of change. He uses it in the context of business strategy but it is more generally applicable. However, it is just A model not THE model, so if somebody can propose something better I’d be happy to adopt and promote it.