Cloud computing is not only in the future—it's also how computers are used today and in the past," says Ellison, co-founder of Oracle and former CEO. Cloud Computing" is a widely recognized term today. It began with individuals putting their own files on the internet, but now even entire companies are depositing all their information in the cloud. More and more individuals and businesses begin using cloud services each year, and this trend does not appear to be going to stop anytime in the near future.
Understanding Cloud Computing
Cloud computing refers to the use of the internet to store and access your data and programs. Rather than storing all your data, you use online services to access your data whenever you need it.
It is a system that offers on-demand, self-service-type services such as:
- Virtual machines
- Data storage solutions
- Network access
- Operating software
- Middleware (software linking other programs)
- Database management
- Protection measures
- Programs
These are made available on large networks such as the internet or private networks. These are accessible by individuals with little assistance from the companies that make them available.
Some large corporations in this field include:
• Amazon: Their website AWS offers a variety of infrastructure services, including storage of data, processing, and networking capacity.
• Google: Google Cloud Platform enables developers to develop, test, and host apps on a quick and secure global system.
• Microsoft: Azure allows individuals to create, host, and execute applications within a Microsoft-controlled worldwide network.
Types of Cloud Computing Services
First, tell us what each service is:
SaaS (Software-as-a-Service): SaaS allows users to access software programs via the internet for a subscription fee. They can operate them on any web-enabled device.
Examples: Google Apps, Salesforce.
PaaS (Platform-as-a-Service): PaaS offers a pre-configured platform to the users to develop, execute, and deploy their own applications. They need not worry about hardware management, storage, or networking.
Examples: Amazon Web Services, Rackspace.
IaaS (Infrastructure-as-a-Service): IaaS offers nothing but the raw hardware and network. The users have to install and run their own software and applications on it.
Examples: IBM Cloud, Google Cloud, Amazon Web Services.
And now that we know the definitions, let's take each Cloud Computing Service and illustrate it with an example. Consider traveling and choosing a mode of transportation to travel around. Based on what you require, you have four options:
- Hail a cab (SaaS)
- Leasing a car (PaaS)
- Leasing a car (IaaS)
SaaS (Software-as-a-Service) : If you take a taxi, the organization takes care of everything such as obtaining the vehicle, keeping it, insurance, and fuel. You pay for the trip only.
SaaS vendors deliver software via the internet. You only pay for what you use, usually as a subscription. All the hardware and software are maintained by the provider and made available on-line using the internet or other networks.
Examples : include Google products such as Google Docs and Gmail.
PaaS (Platform-as-a-Service)
Use case: Think about taking a trip locally and choosing to rent a car. You plan to organize the fuel, tolls on the road, and driver yourself. But the car rental company covers the vehicle, the maintenance of the vehicle, insurance, taxes, and parking.
IaaS (Infrastructure-as-a-Service)
Use case: For instance, if you are going on a long trip to a far place and opt for hiring a car, you have to organize things like getting the car serviced, insurance, road tax, fuel, tolls, and a driver. The car company just organizes the lease payment.
An Infrastructure-as-a-Service provider provides users raw computing resources such as storage space, virtual machines, network, security, and maintenance on a pay-as-you-go model. The users are not concerned about where the hardware is located or how much it would cost to purchase it. Moreover, IaaS providers also provide ancillary features such as load balancing, billing management, data backup, and recovery, and storage offerings.
Cloud Computing Features and Benefits
Provider's Responsibility
The provider receives, operates, and sustains all hardware and software that are needed, in full or in part, at their own premises. This allows users to bypass the administration of individual physical machines and computer programs.
Pay-per-Use Model
Pay only for what you consume. This method saves money compared to other ways in which full amounts are paid irrespective of the amount consumed.
Unlimited Flexibility
Providers align resources in order to rapidly adapt to increasing demands. Companies may increase or decrease capacity according to current needs.
Effective Data Transfer and Security
The users can easily move their information. The system safeguards the information by making multiple copies to avoid loss.
On-Demand Control
Customers can modify their use of resources, resubscribe services, and manage billing without or with little provider involvement.
How to obtain Cloud Computing certification?
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Conclusion
Cloud computing possesses numerous favorable features that render technology simpler and more affordable to handle. With the utilization of providers to handle equipment and software, users can focus on work without worrying about technology-related problems. The feature that one only pays for the utilized and can easily transfer resources readily makes cloud services the ideal solution for businesses of all sizes. Moreover, secure protection of data and easy management make everything function well and securely.
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