Comment by ghaff

PaaS has always been this thing that isn't pure infrastructure or pure hosted software that you use as-is. Salesforce has something over 100K attendees of partners and users to its annual conference. It's always been this in-between thing with a fairly loose definition. I'd argue that Salesforce was long a cross between SaaS (for the users) and PaaS (for developers). You can probably apply the same view to a lot of other company products.