How does cloud computing work?
Cloud computing basically involves accessing IT services over the Internet rather than locally. To date, companies have provided applications, servers, storage, file sharing, backup, and other IT services on their premises, including the IT staff needed to support them.
But with the cloud, everything is removed from the site. IT software applications, servers, compute power, storage stations, backups, and other servers are currently provided outside the site, typically by third parties.
Types of Clouds
Strictly speaking, there is no such thing as “the cloud.” There are actually multiple types of clouds.
Public Cloud
A cloud environment where the IT infrastructure is not owned by the end user (an individual or a company).
Private Cloud
A cloud environment dedicated to a single end user (typically a company), usually running behind that user's firewall.
Hybrid Cloud
A combination of on-premises infrastructure, private cloud services and public cloud.
Benefits of Cloud Solutions
Organizations use the cloud across a broad range of tasks and functions, with more applications becoming cloud-based every day.
Cloud-Based Office Productivity Apps
Two of the most well-known providers are Microsoft and Google, which offer cloud-based productivity software and services. These include apps for creating documents, spreadsheets and presentations, business email and calendaring services attached to custom domains, and communication tools (such as messaging and video conferencing).
Cloud Data Storage and File Sharing
As the amount of data being created each day grows rapidly, companies need reliable ways to store and share this data. The cloud provides this ability. IDC predicts that as much as half of the world’s data will reside in the cloud by 2025.
Cloud Backup and Recovery
Companies are reducing their exposure to losses from natural disasters and hackers by using cloud backup and recovery services. The cloud is more reliable than other backup methods (such as tapes and disks) and offers the added benefit of allowing companies to restore lost data at any time from any location.
Hosted Virtual Desktops
Virtual desktops separate a computer desktop environment from the physical computer using desktop virtualization. It uses a client-server model to store a “virtualized” desktop on a remote server in the cloud. Hosted virtual desktops let employees access their desktops from any location and any device. This increases flexibility and boosts productivity.
Cloud Infrastructure
Moving to the cloud reduces IT capital and operating expenditures. Companies who migrate to the cloud eliminate the need to invest in the servers, routers, storage disks, network switches, software and other physical infrastructure they had to pay for when they hosted their applications, storage, networking and compute power themselves.