83% of users leave websites due to interface design issues. 40% of users never return after leaving
CAP theorem states that distributed data stores can provide only two of three guarantees. Network partition failures require choosing between consistency or availability. No distributed system is completely safe from network failures
Usability measures system's ability to provide safe, effective, and efficient user experience. Can apply to software, websites, tools, and any human-interacted object. Design should focus on users' psychology and physiology
Requirements represent needs in software development. Business requirements focus on organizational objectives. Stakeholder requirements connect business to solution needs. Solution requirements specify functional and non-functional product characteristics. Transition requirements outline migration actions for stakeholders
Usability measures effectiveness, efficiency, and satisfaction in product use. ISO standards first emerged in early nineties, emphasizing these three factors. Humans are emotional creatures, making usability crucial for technology
UX design focuses on user experience and product usability. Usability requires intuitive navigation and clear instructions. Accessibility ensures products are usable by all users. Design should create engaging and enjoyable experiences