How they do it: Hotmails basic inbox and email service was offered to customers for free. However, the inboxes came with limited storage for messages. Users could upgrade their storage by paying a monthly or annual fee.
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How they do it: A lot of apps in the Apple AppStore are accessible for free but then only allow using limited features or a trial period for the full version. To have access to the full version permamently, the user has to purchase a premium version.
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How they do it: After being acquired by LinkedIn in 2012, Slideshare transit ioned from a Freemium to a Free model. In the Freemium model, advertisements were shown, with the option of users to subscribe to different tiers of PRO accounts for a monthly fee of $19 or $49.
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How they do it: Much of Skype’s service is free. Skype-to-Skype calls to other users are free of charge, while calls to landline telephones and mobile phones (over traditional telephone networks) are charged via a debit-based user account system called Skype Credit.
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How they do it: AWS gives away free ”credits” to use their service and set up ones infrastructure on the AWS cloud computers However as soon as the company’s product need grow and exceed the capacity covered by the free credits, it has to pay for the additional use.
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