In 2011, the National Institute of Standards and Technology (NIST) identified five "essential characteristics" for cloud systems. Below are the exact definitions according to NIST

Log in to iCloud to access your photos, mail, notes, documents and more. Sign in with your Apple Account or create a new account to start using Apple services.

Cloud Storage lets you store data with multiple redundancy options, virtually anywhere.

The cloud is a distributed collection of servers that host software and infrastructure, and it is accessed over the Internet. Learn how cloud computing works.

What is cloud computing? Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-go pricing.

The cloud—what is it? The cloud is a vast online storage space where people and businesses store their files and applications, accessible from anywhere with an internet connection. The …

Learn the basics of cloud computing and find out why leading companies are using the cloud to store data, build and run apps, and rapidly deploy next-gen technology.

iCloud+ plans and pricing iCloud keeps your information safe, automatically backed up, and available anywhere you go — with 5 GB of storage for free. When you upgrade to iCloud+, …

Discover OneDrive for secure and convenient file and document sharing. Get personal cloud storage for seamless file sharing with your family and friends.

Cloud computing enables customers to use infrastructure and applications by way of the internet, without installing and maintaining them on premises.