The importance of UX and its influence over the UI.
Most in the field underestimate the importance of a great user experience. But what is user experience in the first place. It is a combination of structure like the content page of a book and the prediction of what your users will enjoy the most to see after they saw something else.
Balance between best development technologies, deadlines and quality.
Developing web and mobile apps sounds pretty straightforward and not that hard at first, but unfortunately that is not the truth. Building something truly good is very difficult and there are so many requirements and demands from the modern web that must be covered if you are aiming for the best.