The certification you pursue will likely depend on your area of interest in IT, your experience level, and what the jobs you’re interested in require. If you’re currently in an IT role, you can ask your employer what skills will be most useful for you to learn.
If you’re just starting out in IT, a training program that will teach you the basics in a variety of IT fields and prepare you for a certification exam can be helpful. For example, Google IT Support Professional Certificate prepares you for the CompTIA A+, the industry standard certification for IT. For more information about how you can navigate IT certification paths, read this guide about IT certification roadmap.