Ask a job applicant what they know about the company they are applying to and they will readily describe what that company does. Far less often, do they describe how the company does, what it does.
What a company does and how it does it are two parts to a whole, one without the other is an incomplete picture. If you want to know ‘the how’, research the guiding principles, mission statement and values, or observe behaviours. How do they fit with your values, both personally and as a potential employee?
Why is this important? Only in understanding both parts, can you and the employer know you are on the same page, that a positive working relationship is likely.