What is uan number?

What is uan number? 

In reality, the product market is a lot more complicated than a handful of competitors — and not just because Apple has been making iOS for so long. When it comes to market analysis, it is often best to start by looking at what other products are doing and then try to game out how they are doing it. 

One example of this method is the uan number, which measures the relative size of a company’s market (in terms of both customers) by dividing their total revenues by their total number of employees.