SAP Screen Personas and its relevance to S4HANA
This disclaimer informs readers that the views, thoughts, and opinions expressed in the text belong solely to the author, and not necessarily to the author’s employer, organization, committee or other group or individual.

In this article i would like to write about how SAP screen personas is part of SAP’s over all UX strategy. While a lot has been discussed about SAP Fiori in many blogs, I felt that SAP Screen Personas product line and its importance is yet to be realized by SAP Customers. Currently there are about 1200+ productive SAP Screen personas customers throughout the globe and it’s still counting. Now let’s come back to main question of how can SAP personas be relevant when Fiori apps are being developed by SAP? To understand this take a look at the below picture

Based on the above flowchart, the SAP GUI screens or Web Dynpro Screens can be enhanced using SAP screen personas if there is no Fiori App existing and also can be used for scenarios where customers have Z transactions or custom transactions (Case1)
S/4HANA comes with the Fiori UX out of the box. It means that instead of using traditional transaction codes, people access SAP functionality through the SAP Fiori Launchpad. They have a personalized cockpit that contains only the transactions they need for their specific role. This is part of the shift that SAP (and the rest of the enterprise software industry) from features to user experience.All the Fiori apps (currently over 9000+ Apps )of which few apps run on SAP S/4HANA. These are UI5 applications written specifically for SAP S/4HANA. They are intended to provide the same experience on any device.When Customers have the option to access SAP S/4HANA on-premise edition through the traditional user interfaces they can use SAP Screen personas for simplifying some of their screens ( Case 2).
SAP Screen Personas also can be used in Screen Scenarios not covered in S4HANA by fiori apps (Case 3)
Exciting thing to note is that SAP Screen Personas Addon is an Approved Addon for S4HANA and also NetWeaver 7.5 add-on list includes SAP Screen Personas.
High-level view of Key UI technologies and tools from SAP.

Support Commitment from SAP: SAP is increasing the SAP Screen Personas support commitment to five years, up from the current three.

Here is a youtube Video in Productivity Power Play 44: The fastest way to create the Fiori UX
Sam Yen, SAP Chief Design Officer, talks about why customers love SAP Screen Personas, how it fits into the overall Fiori UX strategy, and what is the fastest and easiest way to obtain the Fiori user experience. He also talks about the future of SAP Screen Personas and hints at some future direction for the product.
SAP Customers would have various choices as they move forward with their UX strategy and one such choice/tool to improve Productivity to Users is SAP Screen Personas.