What is cloud computing?

Cloud computing refers to the delivery of various computing services over the internet, including storage, processing power, and applications. This approach allows users to access resources and services on demand without the need for substantial investments in local infrastructure. By leveraging cloud computing, businesses and individuals can scale their resources according to need, achieve greater flexibility, and access their data and applications from anywhere with internet connectivity.

The other options describe traditional computing methods rather than cloud computing. For instance, storing files on a local hard drive and using external storage devices for backups are methods tied closely to local computing environments. Running applications solely on a desktop computer restricts the benefits associated with cloud services, such as collaboration and remote access. Overall, the key characteristic of cloud computing is its ability to leverage the internet to provide essential computing resources conveniently and efficiently.