Cloud Computing
Many companies, and notably, plenty of big ones, are starting to put an increasing number of their operations onto the internet cloud. Cost-savings and operational flexibility are big reasons to do so.
Cloud computing solves some of the biggest IT necessities in businesses: A way to increase capacity or add capabilities on the fly without investing in new infrastructure, training new personnel, or licensing new software. Cloud computing encompasses any subscription-based or pay-per-use service that, in real time over the Internet, extends IT’s existing capabilities.
Agility
is improved with users’ ability to rapidly and inexpensively re-provision technological infrastructure resources. This is especially useful if your business is growing fast or has seasonal spikes. There is no longer a necessity to learn how to operate or set-up complicated business applications for your needs. With Cloud Computing, those tasks become the business of the vendor. You only have to learn how to use an intuitive cloud-app, customized for your needs.
Cost
is greatly reduced and capital expenditure is converted to operational expenditure. This ostensibly lowers barriers to entry, as infrastructure is typically provided by a third-party and does not need to be purchased for one-time or infrequent intensive computing tasks.
Device and location independence
enable users to access systems using a web browser regardless of their location or what device they are using (e.g., PC, mobile). As infrastructure is off-site (typically provided by a third-party) and accessed via the Internet, users can connect from anywhere.
Multi-tenancy
Enables sharing of resources across a large pool of users thus allowing for:
Centralization of infrastructure in locations with lower costs (e.g. space, electricity, etc.)
Reliability
improves through the use of multiple redundant sites, which makes cloud computing suitable for business continuity and disaster recovery.
Scalability via dynamic (“on-demand”) provisioning of resources on a fine-grained, self-service basis near real-time. Performance is monitored, and consistent.
Security
Could improve due to centralization of data, increased security-focused resources. Security is often as good as or better than under traditional systems, in part because providers are able to devote resources to solving security issues that many customers cannot afford.Providers typically log accesses, but accessing the audit logs themselves can be difficult or impossible. Furthermore, the complexity of security is greatly increased when data is distributed over a wider area and / or number of devices.
Maintenance
Cloud computing applications are easier to maintain, since they don’t have to be installed on each user’s computer. They are easier to support and to improve since the changes reach the clients instantly.
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