Do I need to purchase MongoDB product before I publish in production server?

From: Chandrasekar Kesavan <chandrasekar@xxxxxxxxxxxxxx>
To: mongodb-user <mongodb-user@xxxxxxxxxxxxxxxx>
Date: Mon, 9 May 2016 03:23:45 -0700 (PDT)
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   We are developing a website with Asp.Net MVC 5, EF Code First and 
MS-SQL. I'm planning to use MongoDB to store user message and chat history. In 
MongoDB download center I choose  Community version to download. 
I would like to know whether we need to purchase MongoDB product before I 
publish the application in production server? 
In MongoDB website there is no information about the subscription.

Thanks,
Chandru

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Why ads?