DEFINITION: PaaS ABB is a Technology Service delivering application infrastructure (middleware) capabilities as a service. There are multiple types of PaaS (xPaaS), including, among many more, application platform as a service (aPaaS), integration PaaS (iPaaS), API management PaaS (apimPaaS), function PaaS (fPaaS), business analytics PaaS (baPaaS), IoT PaaS and database PaaS (dbPaaS). PaaS capability can be delivered as provider-managed or self-managed, multitenant or dedicated. Source: Gartner (https://www.gartner.com/en/information-technology/glossary/platform-as-a-service-paas)