Its decentralized data storage is used to store and recover huge amounts of data. Most blockchain platforms, including Ethereum, can store data but only temporarily. Also, maintaining blockchain on these platforms requires spending resources such as getting computing rather than physical storage space. If such blockchain platforms are used for data storage purposes, the cost of astronomy will become inevitable.
In most cases, however, the files do not need to be saved permanently or cost a lot of resources. This decentralized data storage is therefore designed to store huge files for a fixed period of time at a reasonable price.
Moreover, in a separate blockchain network where FTC is issued, they have created a framework that further strengthens integrity by simply storing data that can specify files in its decentralized data storage.