CLOUD COMPUTING
DEFINITIONS
’’ Cloud computing is an evolution from the notion of grid computing, which had come into vogue in the early 2000s, and involved the sharing of remote computing assets in a high performance computing environment.’’
provides web-based access to computing resources and products,including development tools, business applications, computing services, data storage and networking solutions
Different types of cloud service models is constantly progressing, evolving and improving science
very easy to use, in this way all the offices just connect to the Internet to be able to access the cloud applications
presents a new concept by which the usual attributes of the computer are managed
provides the speed, scalability and flexibility that enable companies to develop, innovate and support business IT solutions.
Cloud service model is competent to give access to the network in a reasonable manner, upon request and at the same time is active everywhere in the data storage process
Software-as-a-service (SaaS):
the basic elements of Saap are the accessibility that is practicable from anywhere
to benefit from the cloud function, no new application is required
Platform-as-a-service (PaaS)
has the following benefits: the possibility of earning, of profit, of income, the ability of a computing process to be used or produced in a range of capabilities.
Infrastructure-as-a-service (IaaS)
is the most adaptable cloud system through which it presents full control over customization and management with the existing infrastructure.
has the ability to replace common infrastructure elements, such as servers, network devices, even storage units.
the most important advantages are: adaptability, simple introduction and minimal capital cost.
Different types of cloud service models:
Cloud private:the entire computing infrastructure is located at the premises of the cloud provider, which provides services to customers via the Internet.Customers can easily use the maintenance of the IT infrastructure, as a result they can add a large number of users with greater ease. Cloud private it's only for one organization, it offers the highest level of security and control.
Cloud hybrid it is a combination of several clouds, such as those mentioned: private, public and community which remain incomparable entities, being correlated with each other
Cloud community divides the infrastructure into several compartments having common activities. The costs are distributed, unlike the public account, among fewer users, resulting in only a part of its benefits being realized.
Conclusion: Each of the 4 mentioned models differs according to price and options.
The advantages of Cloud Computing
Speed - frees up space instantly for development and testing
Global scale - flexible scaling
Backup and recovery: due to the fact that the data is stored in the cloud, thus making backup copies, it results in an easier process in this way
Almost unlimited storage: unlimited data storage space.
Cost efficiency:it is the most effective method of use, but also of maintenance. Capital expenditures are eliminated