Dark Reading explains:

Security certifications aren't mandatory for all industry experts, but they can make a difference in applying for new roles. (ISC)² CEO David Shearer says they're a "must-have" when looking at candidates on paper.

"Statistically, someone who goes through the formal [certification] process tends to be a candidate with more educational experience," he says, and certifications give professionals the "deep dive" expertise they need to drive their careers.

There are definitely people who learn from experience and fall outside the rule, however. "There are always exceptions; people who don't have certifications who are fantastic at what they do," Shearer notes.

Read more at Dark Reading