Web builds and development processes usually happen in a typically linear fashion. Teams involved later in the process are often unaware of earlier setbacks with tasks, when they will start work and worst of all: their deadlines.
The Sitecore Experience Editor changes things by working in a circular way. This means the whole team can work collaboratively and at the same time. Content editors, designers, and developers now can all reap the rewards of better deadlines, communication and best of all: a project that gets to market faster.
Read the full Sitecore SXA article.