Information architecture
Overview
Information architecture (IA) is the science of structuring content as it is applied to news websites or blogs, online stores, booking apps, downloadable software, etc. The goal of information architecture is to classify the content in a clear and understandable way and arrange it according to relations between the content pieces, allowing users to find what they need with less effort. Not applied solely when creating a product from scratch, IA is used in redesign.
Information architecture is a part of interaction design that considers content, context, and users. This means that user needs, business goals, and different types of content must be taken into account while structuring a product’s information.
https://www.altexsoft.com/blog/information-architecture/
This is really good article for in depth professional work, including research, taxonomy, etc.