As written in the encyclopedia, this passage is the definition of cloud computing given by NIST. Originally in English, the content is as follows

"Cloud computing is a model that supports ubiquitous, convenient and on-demand network access to a shared pool of configurable computing resources (such as networks, servers, storage, applications and services), and can quickly supply and release these resources with minimal management work.

Or service provider interaction. "

Relevant reference materials are as follows

NIST definition of cloud computing. Peter mayle, Timothy Glance. September 20 1 1. http://nvl pubs . NIST . gov/NIST pubs/Legacy/SP/nistspecialpublication 800- 145 . pdf