Job responsibilities can shift dramatically in the course of a few years as a result of industry changes, technology advances, or increased efficiency. (inc.com)
And then there is Dropbox, the popular file storage and file sharing company that ran almost entirely on AWS until it quietly moved 90 % of that workload into its own data centers over the course of a few years. (fortune.com)
Just one additional hour of sleep a week increased wages by 1.5 percent over the course of a season and 4.9 percent over the course of a few years. (inc.com)