We’re currently finalizing the details/pricing of a paid Infura plan for dApps and Businesses. For the moment, all that’s required is registration at https://infura.io/register and setting your application up to use the dashboard generated Project IDs via our new Infura API authentication system.
If you’d like to discuss Enterprise level custom engagements, we are currently considering those on a per case basis. If so please let us know via email at email@example.com.
Otherwise, feel free to continue using our open version and keep an eye on our social media platforms.