The customers typically experience only the application layer. However there are severals layers of technology needed before you can build an Intelligent Application. The image below shows the difference between Infrastructure as a service, platform as a service and software as a service.
These infrastructure and platform layers are prebuilt for our product and do not need any development effort, we also have ready made applications for different industries. Depending on the business problem or industry we recommend a PaaS or a SaaS engagement.