If you are searching for a "top" activation key for the Business Edition, you are likely looking for volume licensing, centralized activation, or SAML SSO integration.

You can purchase Parallels Business Edition via the AWS Marketplace or Azure Marketplace. This is the "top" method for DevOps teams. The key is billed to your cloud account, and activation is automated via API.

Here is what makes the "Business Edition" the only choice for companies: