Compelled by the need to deliver content-rich digital interactions on mobile, Web, and everywhere, application development and delivery (AD&D) professionals supporting content management technologies are taking an API-first approach. They are adopting new headless content management systems (CMSes) from vendors like Cloud CMS, Contentful, Contentstack, and Prismic.io. Or, they are tapping into new API sets from web content management stalwarts like Hippo and SDL to unlock content. This microservices approach is the future of digital experience architectures.