Great product. After using the API solution for Aspose for over 3 months, my company is moving towards buying a full license. We originally looked at over 10 different technologies that could support our PDF conversion and manipulation needs. Aspose API provided a great introductory solution as we were testing the feasibility of the business. So now we find that (a) the business is a success and (b) our needs are outweighing the API. We are also looking for more features that the API doesn't have like editing capabilities. So we are moving forward with a typical IAAS solution on Azure which is very easy to do with Aspose.PDF for .NET. So really pleased, the only thing I would say to be aware of if you choose the API solution is price. We found getting an actual license is much, much cheaper vs. API once you get to a few thousand calls a month.