A persona represents our target audience. Those personas aren't necessarily real people, but they've been constructed based on real data and information collected from real consumers.
A user persona resembles a fictionalized version of a customer. UX designers start the design process by performing user research - establishing empathy with the target users and determining their precise requirements for the product, they're creating. The persona is typically based on this user research and reflects the goals, needs, and perceived behavior trends of the target audience.
Whether you're creating mobile apps or a mobile-friendly website, it's crucial to understand who will consume the product. A clear problem statement is essential to solving any real user problem.