What Is Cloud Computing?

Given that the term “service” seems to apply to everything, it is helpful to take a step back and consider the difference between cloud computing services and cloud deployment as a whole. Cloud deployment describes how a cloud platform is implemented, how it is hosted and who has access to it. Sources: 4
Cloud computing is the process by which an organization’s resources, software, applications and data are processed on computing infrastructure. Cloud computing applications work by virtualizing a server’s computing power into segmented software-driven applications that offer processing and storage capabilities. Sources: 4, 5
Some of these services are built on a layered cake, from which the term “stack” derives and which forms the basis for cloud computing. While PaaS mainly refers to the tools used to program and implement end-user applications that are primarily only relevant to engineers, SAAS focuses on the development and deployment of business applications in the cloud, such as cloud storage and cloud services. Cloud computing technology removes the problems of traditional application development and frees us to focus on developing applications for businesses that deliver real benefits to their customers. Businesses have many different types of cloud applications available, from small to large companies. Sources: 3, 5
One of the benefits of using cloud computing services is that companies can retain control of their own IT infrastructure and keep it in their data centres, or they can pay for cloud services that they use themselves. Instead of owning its own data infrastructure or data centre, a company can lease everything from apps to storage from a cloud – a computing service provider. Sources: 3
Conversely, cloud computing guarantees the bandwidth and response time of the service through centralized management of the measured services. This makes cloud computing a more efficient and cost-effective option for businesses and thus for the cloud – a computing service provider can benefit from offering its customers the same level of performance. Cloud computing can use a wide range of technologies, such as cloud storage, virtualization, cloud networking. Sources: 1, 3
Unlike Grid, Cloud uses utility calculators and now supports a pricing strategy based on supply and demand, and uses the benefits of computing as a basis for pricing. Sources: 1
A hybrid cloud computing environment is defined as private and public cloud systems that interact as separate but interconnected systems. The cloud uses real resources and standard operating systems, compared to Grid, which uses a combination of private, public and hybrid private / public clouds and a hybrid public / private cloud system. Sources: 1, 7
Organisations that use a hybrid cloud can maintain their own private cloud environment while using public cloud services for computing. Organizations that use hybrid clouds retain the ability to use their own private cloud environment and public cloud services to calculate tasks, but they can choose to maintain privacy by storing sensitive information on-site servers while hosting less sensitive applications and other resources in public clouds, where costs could be lower. Sources: 7
Cloud sourcing is the outsourcing of services to a cloud-based platform such as AWS, Google Cloud Platform, Microsoft Azure, GCP or Microsoft Cloud. Sources: 8
In recent years, cloud computing has grown beyond the mere release of local hardware and storage. Today, it offers services ranging from computing power to enormous data processing capacities over an Internet connection. The cloud makes access to application software, which is normally provided on a pay-as-go basis, unnecessary. Instead of investing in and supporting your application to handle business processes locally, you can now outsource it directly to the cloud. Sources: 6, 8
This means you no longer need huge hard drives and processors to keep everything running, but a single, low-cost, fast connection. 
One of the benefits of using cloud computing services is that companies can avoid owning and maintaining their own IT infrastructure and only pay for what they use when they use it. To have its own data infrastructure in a data centre, a company must rent access to everything from applications to storage space from a cloud service provider. You can rent from a cloud provider or own your own data centre infrastructure. 
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