A stock agency is a business that licenses and sells images, videos, and other media content to clients, such as publishers, advertisers, and designers. These agencies curate a vast collection of visual assets, allowing customers to find and purchase the rights to use specific content for their projects. Typically, stock agencies operate online, providing searchable databases where users can browse through various categories and styles. Popular stock agencies include Shutterstock, Getty Images, and Adobe Stock, which offer both royalty-free and rights-managed options for licensing media.