What is Architecture?

So I recently tried to apply for an upgrade with SACAP and this was the response I received:

Unfortunately we cannot accept your qualification for the purpose of upgrading you, as its discipline is not on architecture but rather on urban design.

Which lead me to this question🤔...

What is architecture?

I think part of the problem here is that architecture is viewed in a one-dimensional manner. Why would the faculties of universities offer interdisciplinary studies that are not recognised by industry bodies? There is something that just doesn't add up here.I particularly like this definition of what architecture is.

Architecture is the built realisation of a particular concept, or idea. This idea can be about construction, or the way people will use a building, or how the building fits into a physical, or a social, landscape.

What is your definition of what architecture is?