Freemium

When framing a business model within the consumer Internet space, we may hear about advertising-supported, freemium, subscription, or a hybrid model.

Regarding premium services, both the "freemium" model (free basic service with a premium service offered on a subscription basis) and the free trial model...

Venture capitalist and blogger nonpareil Fred Wilson calls it the "freemium" business model: "Give your service away for free, possibly ad supported but maybe not, acquire a lot of customers efficiently through word of mouth...

Most consumer-level cloud offerings would be labeled a freemium, which is a free version that is supported by a paid, premium version.

So the only thing left would be using freemium as a means of gaining trial, with the potential to up-sell to a paid subscription.