How to anonymize a business in a paper?
In your introduction you can explain the context of your study, and the research questions you want to treat. Then, in the last sentence of the introduction you can write something like:

To answer the research question, we treat a case study dealing with a
particular company. For privacy reasons we cannot give the exact name
of the company, so we will simply refer to it as &quot;the company&quot; throughout this paper.

Then in the paper you can use sentences like:

Productivity in the company was boosted by increasing the light
intensity at the workstations
The company that is the focus of our study is a tech company of 500 employees which has grown very much in the last 5 years.

In this way everyone is aware of the fact that a fake name was used.
ps I haven't written any papers that involved this kind of dilemma, but this is what I would do.