Hi @Natalia Nascimento 

While I am only a volunteer moderator of this Community forum, I will share what I know.

1 - Can companies use the free version for commercial purposes?

I hear of the Miro Free Plan being used for commercial purposes all the time, so I would say: Yes.

2 - Is there a maximum limit of users for a company to use the free version? if yes, which one?

There is no limit - more on this here → https://help.miro.com/hc/en-us/articles/360017730373#h_01F32SZVH9JMRP60C3MQ0XP9RW

3 - Is there any documentation (terms and conditions) that informs this limitation/non-limitation of the use of the free version by companies?

I cannot find anything specific to the Free Plan. Here is the page I commonly refer people to:

https://miro.com/legal/terms-of-service/

Hello, 

Amazing! 

Thank you so much, all my questions were answered!

Have a wonderful day!