For an increasing number of American workers, the term “middle-skill” has come to mean “digital skills.” Some 82% of middle-skill jobs are now “digitally intensive,” a 4% increase over the past two years. Evenmore importantly, the digital skills marketplace is sorting out into clear pathways for workers to advance, a vital component if middle-skill workers...

In the middle-skill job market, the world is increasingly divided between the jobs that demand digital skills and those that don’t—and the ones that don’t are falling behind. Much of the debate over technology in the workforce has focused on sophisticated skills, such as writing code. But the more significant impact on the middle-skill job...