What startups should know about ITIL® ?

While some IT professionals encounter this ITIL thing on their first day in a new job, some others have reached the role of Senior Software Engineer at the ripe age of 26 before being exposed to it. What is it and why would anyone working in a startup care about a 30-year-old IT framework? The article sheds some light on this 250,000-exams-a-year phenomenon.