Content delivery is a term for specific practices involving the geographical distribution of Web content to accommodate faster page loads and better access to online information by end users. Web content is duplicated and maintained by distributed servers to make it easier to provide in response to page requests.
Content delivery is also known as content distribution or content caching.
Techopedia explains Content Delivery
Common stakeholders in content delivery strategies are Internet service providers and the owners of major websites, as well as various network operators. Commonly, a content delivery network (CDN) involves detailed contacts between these parties for the purpose of maintaining the content on localized servers. Different kinds of content delivery networks include peer-to-peer setups and private CDNs designed for specific uses.
In addition to decreasing load times and promoting efficient content delivery, content delivery practices can also help prevent denial of service (DoS) attacks by decentralizing data handling tasks.