User experience in system design and development emerged soon after we started masking our highly complicated command line systems with Graphical User Interface, enabling non-technical users to operate the system. Technological advancement and commercialization resulted in growing number of end users with a great level of diversity. Expecting end users to have no technical knowledge and need for ‘simple to use system’ forced system designers to incorporate user experience in the interface design. Declaration by Microsoft’s CEO, “We are in the experience business” in 2015 Windows 10 devices event  shows the importance of user experience in system development.
Today, there are different technologies like web, mobile, wearable etc. with different platforms like Linux, Windows, Android etc. and software development on these platforms is not about what your system can do, but is about how easy it can do with no metrics to measure ‘how easy’. A good user experience involves more unconscious interaction of user with the system . Statistics shows that after a bad user experience, 88% users are less likely to return on a website .
User Experience Standards
User centered design is the key for good user experience. Standards for user experience are difficult to create and hard to enforce . These standards are formulated after research and usability testing and help in creating an easy interface on the go. There are two types of user experience standards, one is basic common set of standards and other is the platform specific set of standards. System developers fail to create a compelling user experience because they often use only basic common set of standards neglecting the platform specific standards, mixing platform standards or using none of them.
Following standards in system design explicitly contribute towards excellent user experience and increase the productivity of the user. For example, a standard of keeping the menu bar either at top or in left of a website make it easy for users to look for menu at those specific places. Placing the menu elsewhere will make user search for it and lead to frustration.
Basic user experience standards should be applied to every system design, regardless of the platform. The principles of basic standards are recognizing diversity, following interface design rules and error prevention . The top rules include consistency, reversal of actions and accessibility. ISO 13407, ANSI 354 and WAI are the three most popular usability standards .
Accessibility is one of the best practices in user experience basics declared by the United State government  and also created a law requiring all government information to be accessible to the disabled people . The system designers often ignore accessibility in their design, which may result in serious consequences to a disabled person, for example threat of losing job and emotional breakdown .
Consistency, i.e. layout, color, buttons, input output field etc. must be consistent throughout the system is a golden rule followed by accessibility, which is also frequently violated . It helps in increasing productivity and if ignored will confuse the users.
Errors are integral part of the system. They occur when user performs actions outside the normal course of the system. The best practice is to prevent errors by having consistency and knowing all possible user actions. Other is to minimize the effect of error as possible by using reversal of action .
Platform Specific Standards
Web and mobile technology has the largest user base and demands more software development. There is growing number of user experience standards in these technologies, predominantly responsive design for web, material design for Android and flat design for iOS. Most system designers, especially beginners only focus on the system functionality and development aspect and never learn about these standards, which result in poor software performance.
Increase in web access from smartphones and tablets resulted in responsive web design standard, which require website to adapt according to the screen size of the device. The practice of creating separate website for mobile devices is now obsolete with one site fits all standard . The basic method for making website responsive is using CSS media queries . The recent trend gave birth to new standard called ‘Mobile First Design’, which is similar to responsive web design but in reverse order. Designing starts from small screen to the big screen .
With more than 80% market share in smartphone platform, Android is top ranked mobile operating system in the world . With the increase in hardware configurations and features, Android app store is flooded with lot of apps. The important aspects of smartphone app design include consistency, customization and selection of framework, theme and icons . Google introduced a standard for Android platform in June 2014 named ‘Material Design’  and continuously encouraging app developers to use it. With material design Google wants all of the apps to follow one common standard that will increase usability of applications.
Although, user centered design is itself a latest trend , but just following the user experience standards is not enough in this competitive world of system development. Watching latest trends in user experience and implementing it in the user interface design is equally important. Incorporating latest trends in design will give competitive advantage. For example, “Micro UX” is a latest trend, which focuses on smallest details for great user experience .
Major conflicts in following standards arise in the cross platform software development, when there is need to develop the same software for multiple platforms. There are two choices for the system designers, first is to design system using the platform specific standards specified for each platform. Second is to design a common user interface and implement it on each platform regardless of platform specific standards . Best solution and current trend is to keep a common user interface and using only necessary platform related standards. For example, you can see platform specific user interface differences in WhatsApp application on Android and iPhone, while there is no visible differences in Google maps application on these platforms.
Steps to follow for a great user experience
Following are the steps system designers should follow in the user interface designing stage of the system development:
For single platform software development:
- Understand the basic user experience standards.
- Understand the platform specific standards and guidelines.
- Look for the latest trends in the user interface design.
- Design and implement user interface using both standards, giving priority to the platform specific standards.
- Conduct usability testing and keep iterating the designing process until results are satisfactory.
For cross platform software development:
The only difference in steps for cross platform software development is to make decision about the selection of common user interface or different interface according to platforms before designing and implementation step.
Often ignored, evaluation, testing and iteration are crucial aspects in the above steps . There are different tools for evaluation of user experience for example, UX Curve  and usability testing using eye tracking  and surveys that should be used for creating compelling user experience.
System designers ignore user experience standards because they either underestimate or overestimate these standards. System design and development is not about creating a wonderful system, but is to create system that will fulfill the needs of its users . For this, a successful interaction between user and system is required. User Experience standards plays an important role in human-computer interaction by increasing usability of the system and productivity of users. However, the main component of interface design is testing and iteration therefore system designers should iterate on their interface according to the latest standards and trends.
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