Is it possible to legally use an unactivated windows 10?

Question

Windows

I work in an organization. I registered a couple of machines with Windows Insider accounts and installed Windows 10 for tests. Is it legal to use them without activating them in principle?

Answer 1

Microsoft Windows Insider Program Membership
Agreement

4.2 Scope of rights. ... In particular, this Agreement does not give you the right, and therefore you may not:
i. use the Software in a production operating environment;