To understand how to measure success of a UX led project, it's important to understand the 3 P's that drive all enterprise UX projects.
Profit, People and Productivity.
The impact on profit can be measured by metrics such as errors, average repair time, cost of development, maintenance, productivity, efficiency and time saved per task.
People's expectations of enterprise UX are converging on expectations set by state of the art consumer software. The rise of BYOD policy within enterprise often sees enterprise apps sitting next to the best consumer facing apps and comparison is inevitable. Enterprise users expect immediate onboarding, an intuitive learning curve and the ability to customise their experience.
Hard to use technology is directly linked to lower productivity, increased staff turnover and workplace disatisfaction. Well designed enterprise systems streamline communication channels and vital processes that increase efficiency and job satisfaction.
What people care about is that they want to get their job done and feel happy when they're finished.
The first iPads were released without instructions because according to Apple, you already knew how to use it. This should be the goal of all enterprise software.
Usersneed to be able to customise the software, even just a little.
No training needs to be the goal, although that may be unrealistic on some complex systems, it still needs to be the objective.
Users should be able to access 50% of their vital job functions immediately, and within 2-3 clicks have access to 80-90% of their job function.
So, to summarise. successful enterprise UX project considers users' needs, the clients' goals and the organisations' priorities.
The best user experience sits at the intersection of these concerns.