In simple terms, enterprise data that only exists and lives within its own private network falls in the category of intranet.

Various applications within an enterprise exist within the enterprise's own network, and access is denied to others apart from designated employees. Due to this reason, the data captured using these applications lives within an enterprise in a secure and private fashion.

The applications churning out this data can be data of the employees or various transactional data captured while using enterprises in day-to-day applications.

Technologies used to establish intranet for an enterprise include Local Area Network (LAN) and Wide Area Network (WAN). Also, there are multiple application platforms that can be used within an enterprise, enabling intranet culture within the enterprise and its employees. The data could be stored in a structured format in different stores, such as traditional RDBMS and NoSQL databases. In addition to these stores, there lies unstructured data in the form of different file types. Also, most enterprises have traditional data warehouses, where data is cleansed and made ready to be analyzed.