Research and development (R&D) is like inventing new things. People in R&D jobs use their creative problem-solving skills to think of ideas and find ways to improve existing products and invent new products. For example, a company might want a new way to sell their product online, so they might hire a team of people to research and develop a new website to do that. They may then use what they've learned from their research to develop a new product or service. At the end of their work, they may come up with something that no one has ever seen before!