Many of your peers with heavy enterprise investment in SAP, are thinking about the business case for HANA.  In this research we looked at different HANA use cases and at early efforts to learn how to run an enterprise by predicting, in real time, the direction of a stream of granular observations, rather than by waiting for period end and then explaining variances from plan :   https://www.forrester.com/SAP+Hana+Is+The+Answer+Whats+The+Question/fulltext/-/E-RES117654

But now some firms are migrating to Suite on HANA or more correctly SAP Business Suite Powered By HANA in search of digital transformation opportunities such as the ability to manufacture a batch of one or to target a segment of one. More firms are planning to investigate S4HANA to simplify and streamline their data and processes to get in shape for the more intense competition of a more transparent and digitally empowered economy. We looked here at the stages in planning the transitions the skills and help you will need : https://www.forrester.com/Brief+Plan+The+Next+Phase+Of+Your+SAP+Journey/fulltext/-/E-res122841

Look out for the next in the series in which we investigate HANA scalability.