cloud computing
TRANSCRIPT
CLOUD COMPUTING
CONCEPT
Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications.
Cloud computing allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access.
This technology allows for much more efficient computing by centralizing storage, memory, processing and bandwidth.
A simple example of cloud computing is Yahoo email, Gmail, or Hotmail etc. You don't need a software or a server to use them. All a consumer would need is just an internet connection and you can start sending emails. The server and email management software is all on the cloud ( internet) and is totally managed by the cloud service provider Yahoo , Google etc. The consumer gets to use the software alone and enjoy the benefits.
SOFTWARE, DATABASE
BENEFITS
Cost is claimed to be reduced and in a public cloud delivery model capital expenditure is converted to operational expenditure, 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 phone).
Virtualization technology allows servers and storage devices to be shared and utilization be increased. Applications can be easily migrated from one physical server to another.
Reliability is improved if multiple redundant sites are used, which makes well-designed cloud computing suitable for business continuity and disaster recovery.
Maintenance of cloud computing applications is easier, because they do not need to be installed on each user's computer and can be accessed from different places.
SECURITY
Security could improve due to centralization of data, increased security-focused resources, etc., but concerns can persist about loss of control over certain sensitive data, and the lack of security for stored kernels.
• KERNEL IS THE CENTRAL PART OF THE SYSTEM
Security is often as good as or better than other traditional systems, in part because providers are able to devote resources to solving security issues that many customers cannot afford.
However, the complexity of security is greatly increased when data is distributed over a wider area or greater number of devices and in multi-tenant systems that are being shared by unrelated users.
In addition, user access to security audit logs may be difficult or impossible.
Cloud Computin
g Compani
es
Amazon Web ServicesThe cloud computing industry leader in the opinion of most experts, Amazon has consistently outranked the competition in both innovation and customer service over the past two years.
Verizon (Terremark)With the acquisition of Terremark, Verizon was able to expand its cloud services portfolio into the enterprise market and transform itself into, potentially, the biggest provider in the industry.
IBMThanks to a focused commitment to expanding its cloud services menu, long-time IT behemoth IBM has been busy eating up a massive chunk of the enterprise market this year.
Salesforce.comAlready highly successful in the Software as a Service market, Salesforce.com guaranteed itself a continued place at the big boys’ table for the foreseeable future when it acquired Platform as a Service giant Heroku.
CSCSpecializing in IT integrations, CSC recently launched BizCloud – a unique private cloud service that integrates Infrastructure as a Service into your legacy IT system and interlinks it with Software as a Service providers.
RackspaceRanking second only to the mighty Amazon in cloud-based revenue, Rackspace is poised to remain with the pack leaders thanks to its recent acquisition of cloud management technology specialist Cloudkick.
GoogleThe undisputed king of search engines spent the first half of 2011 adding attractive features to its Google App Engine service in a bid to win a greater share of the enterprise market.
BlueLockWhen it pioneered a breakthrough improvement in vCloud resources for VMware, BlueLock immediately established itself as one of the leading VCE providers in the world.
MicrosoftEnjoying tremendous success with its Azure cloud service, Microsoft owns a significant share of the cloud services market among mobile companies, web companies and social networking firms.
JoyentTeaming up with Dell to create pre-configured, ready-out-of-the-box cloud infrastructure packages, Joyent has positioned itself as a leader in private cloud technology.
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SOURCE:•www.wikinvest.com
•www.cloudcomputing-companies.org
•en.wikipedia.org
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