What is the differentiation document?

The term "differentiation document" is not a standard or widely recognized term in any specific field. It's possible that it's used in a specific context or organization, but without more information, it's difficult to say exactly what it means.

To help me understand, could you please provide more context? For example:

* Where did you encounter this term? (e.g., a presentation, a book, a website)

* What was the topic being discussed?

* What were the surrounding words or phrases?

Once I have more information, I can provide a more helpful and accurate answer.