Fig. 1
From: A view of programming scalable data analysis: from clouds to exascale
The three models of the DAaaS software methodology. The DAaaS software methodology is based on three basic models for delivering data analysis services at different levels (application, platform, and infrastructure). The DAaaS methodology defines a new model stack to delivery data analysis solutions that is a specialization of the XaaS (Everything as a Service) stack and is called Data Analysis as a Service (DAaaS). It adapts and specifies the three general service models (SaaS, PaaS and SaaS), for supporting the structured development of Big Data analysis systems, tools and applications according to a service-oriented approach