Sanity is a Composable Content Cloud that provides a headless content management system for frameworks that support it. Within the Composable Cloud are data stores and edge networks for images, videos and PDFs, and the ability to extend functionality using Plugins. We've personally used Sanity for many years, and we've been so impressed we pivoted the business to use the content management platform exclusively to build new websites. We'd highly recommend you have a go with it and not be put off by the initial learning curve, as, in our opinions, it's hands-down the best CMS on the market.