It means that we provide API (Application programming interface) calls that can be used to access Publitio's infrastructure in order to upload, store, transform, list, show, download and deliver images or video type of content to final users.
-Plain English : We offer cloud hosting on which you can upload images and videos, convert them to desired format and when visitor comes to your website or mobile app, that content will be shown to user from through our service. You don't need to have your own hosting/servers for Images and Videos we handle that and all of this is done through programing scripts.