Software-as-a-service (SaaS) enterprise resource planning (ERP) is accelerating as a mainstream delivery model to help companies gain flexibility and leverage modern cloud technologies. The market landscape is evolving as pure-play SaaS ERP providers battle traditional ERP vendors that are repositioning their offerings for the cloud. Application development and delivery (AD&D) leaders and their business partners should assess the viability of their current ERP deployments and consider the rapidly changing ERP landscape as you plan a transition path to the cloud.