It seems every industry has a certification of some sort. Why do all these certifications exist? In a word: Credibility. Would you go to a personal trainer who did not have the proper training and knowledge? Of course not. Would you entrust your computer, and all its precious documents, to someone who did not have the know-how required to fix whatever currently maligns your system? No way. But with so many people pretending to have detailed industry expertise, it's difficult to know whom to trust. Certifications ensure a certain level of knowledge, study, and expertise.