Abstract – MaaSTM (Model as a Service) sets a new concept to order and classify data modeling design and deployment to the Cloud. MaaS changes the way to move data to the Cloud because allows to define data taxonomy, size and contents. Starting from data model design, MaaS might guide the DaaS (Database as a Service) lifecycle, providing data granularity and duty rules: as a consequence, MaaS implements the new concept of Small Data.

In fact, Small Data answers to the need of controlling “on-premise” data dimension and granularity. Anyway, Small Data is not data volume limitation. Small Data affords data modeling full configuration and provides 2 main advantages: data model scale and data ownership that provide assigned data deployment and, finally, data deletion in the Cloud.

Introduction
The inheritance coming from the past imposes to manage big data as a consequence of multiple integration and aggregation of data systems …