Final answer:
In computer science and web development, the backend refers to the server-side of a website or application and involves technologies like databases for data storage.
Step-by-step explanation:
In computer science and web development, the term 'backend' refers to the server-side of a website or application. It includes the code and technologies that handle data storage, processing, and communication. The term 'DTI' is not commonly used in this context, so it's unclear what specifically you are referring to. However, in web development, one commonly used backend technology is a database management system like MySQL or PostgreSQL, which stores and retrieves data for the website or application.