HomeUncategorizedDefinition of Cloud Computing, Operation, IaaS, PaaS, & SaaS

Definition of Cloud Computing, Operation, IaaS, PaaS, & SaaS

Rekha
By Rekha

Cloud Computing is a paradigm-shifting breakthrough that is changing how people and businesses access and manage computing resources in the constantly changing world of technology. The fundamental idea behind cloud computing is to provide shared, adjustable computer resources over the internet for on-demand access. Cloud computing may be simply described as a virtual platform that gives you unrestricted online storage and access to your data. In this article, we’ll get into the Definition of cloud computing, understand various types, and explore their uses and advantages.

“Harnessing Power of Cloud: Exploring Cloud Computing Essentials”

Cloud_Computing
Cloud_Computing

Detail Definition of Cloud Computing 

  • To store and retrieve data, cloud computing uses a network of distant servers that are hosted online. Numerous IT services, including networking, servers, databases, software, and virtual storage, are offered via the cloud.
  • Delivering various services via the Internet is called cloud computing. Data storage, servers, databases, networking, software, and other tools and applications are examples of these resources.
  • With cloud-based storage, files can be saved to a remote database instead of being stored on a local or personal hard disk. A gadget that runs software can access data and run it as long as it has an internet connection.
  • For several reasons, including cost savings, higher productivity, speed and efficiency, performance, and security, cloud computing is becoming more and more popular for both individuals and enterprises.

Why Choose a Cloud Computing System?

  • IT infrastructure is provided by both large and small IT organizations using conventional methods. That indicates that a server room is a basic requirement for any IT organization.
  • Database servers, mail servers, networking, firewalls, routers, modems, switches, QPS (Query Per Second, which indicates the volume of queries or loads that the server will manage), configurable systems, fast internet, and maintenance engineers should all be present in one server room.
  • We need to invest a lot of money to set up such an IT infrastructure. Cloud computing was to address all of these issues and lower the cost of IT infrastructure.

How does Cloud Computing Operate?

Through satellite networks, the cloud is essentially a decentralized location for information sharing. Each cloud application is hosted by a hosting business, which also maintains the enormous data centers that offer the security, storage, and processing power required to keep all of the user-submitted data safe.

In addition to providing the customer with an ecosystem that allows devices and applications to communicate with one another (for example, downloading a song on your laptop and having it instantly synced to your iPhone music app), these hosting businesses can also charge for the right to use their clouds and store data on their networks.

Types of Cloud Computing

Types_of_Cloud
Types_of_Cloud

As cloud computing grows, there is multiple categories division further. The two categories are the cloud-based services category and the cloud-based deployment category.

  1. Cloud computing based on deployment models
  2. Cloud computing based on service models

a) Cloud computing based on deployment models:

Depending on the requirements of the company, you can implement any one of the following five types of cloud:

Public Cloud:

Public_Cloud
Public_Cloud
  • Anyone can use public cloud storage to store and retrieve data over the Internet on a pay-per-use basis.
  • The Cloud Service Provider (CSP) is in charge of managing and running the computing resources in the public cloud. The CSP maintains the infrastructure that supports it and makes sure the users can access and scale the resources.
  • Anybody can use the public cloud with an internet connection, regardless of location or size of business, because of its open design. Users can run apps, save data, and utilize the many services offered by the CSP. Customers can be guaranteed they will only be paid for the resources they use by utilizing a pay-per-usage plan, which is a wise financial decision.
  • A few examples are Microsoft, IBM SmartCloud Enterprise, Google App Engine, Windows Azure Services Platform, and Amazon Elastic Compute Cloud (EC2).

 Private Cloud:

Private_Cloud
Private_Cloud
  • An internal cloud or a corporate cloud are other names for private clouds. Organizations utilize it to construct and oversee internal or external data center management. The use of open-source tools like Eucalyptus and OpenStack is possible for its deployment.
  • OpenStack, Microsoft Azure Stack, Oracle Cloud at Customer, IBM Cloud Private, and VMware vSphere are a few examples.
Division of Private cloud computing

Private cloud computing is divided into two categories by the National Institute of Standards and Technology (NIST) based on management and location:

  1. Private cloud located on-site: A private cloud located on-site is housed inside the organization’s physical infrastructure. It entails building up and managing a particular data center that provides cloud services only for the organization’s internal needs. Since the organization still has full control over the infrastructure, they are free to alter and configure it as they see fit. With this level of management, organizations can effectively handle security and compliance challenges. On the other hand, setting up and maintaining an on-premise private cloud requires a large investment in hardware, software, and IT expertise.
  2. Outsourced private cloud: In an outsourced private cloud, the company teams up with a third-party service provider to host and oversee the cloud infrastructure. The provider has the option of running the private cloud in a colocation facility or their own data center. This arrangement reduces the load of infrastructure management for the business by utilizing the resources and expertise of the service provider. Scalability is provided by the outsourced private cloud model since the supplier can modify resources to meet the demands of the company. Because of its adaptability, it is a popular option for companies that want the benefits of a private cloud deployment but don’t want to pay the upfront costs and continuous maintenance associated with an on-premise installation.
  • Both internal and external private clouds provide organizations greater control over their data, software, and security than do public cloud solutions. Organizations needing high levels of customization and security, sensitive data, or rigorous regulatory requirements might choose private clouds for their workloads.

Hybrid Cloud:

Hybrid_cloud
Hybrid_cloud
  • The combination of public and private clouds, create a hybrid cloud. We can state that a hybrid cloud is only partially secure because members of a company are the only ones able to access services hosted on a private cloud; services hosted on a public cloud are accessible to everyone.
  • Organizations can establish a flexible and scalable computing environment by utilizing the advantages of both public and private clouds in a hybrid cloud arrangement. We can use cloud services of third-party organizations, reachable online is permitted under the public cloud section.
  • Amazon Web Services, Office 365 (MS Office on the Web and OneDrive), and the Google Application Suite (Gmail, Google Apps, and Google Drive) are a few examples.

Community Cloud:

Community_cloud
Community_cloud
  • A community cloud enables several companies to communicate information between themselves and a particular community by making systems and services available to them. Either one or more community organizations, a third party, or a mix of them own, administer, and run it.
  • Organizations from the same industry, the public sector, or any other group can participate in a community cloud setup and work together to create a shared cloud infrastructure. These services, apps, and community-relevant data are accessible to them due to this infrastructure.
    Example: Cloud Healthcare Community

 Multi Cloud:

Multi_cloud
Multi_cloud
  • In cloud computing, multi-clouding refers to a strategy where businesses use many cloud service providers or platforms to fulfill their computing requirements. There are dispersion of workloads, applications, and data  throughout several cloud environments—public, private, and hybrid clouds—in this process.
  • Businesses can choose and utilize the best cloud services from several providers according to their unique needs by implementing a multi-cloud approach. By utilizing the unique skills and offerings of each provider, they can reduce the risk associated with depending on a single vendor and take advantage of competitive pricing structures.
  • Examples are Google Cloud Platform (GCP), Microsoft Azure, and Amazon Web Services (AWS).

Differences between community, hybrid, private, and public clouds

Below we can see the difference between all types clouds:

community_hybrid_private_public clouds
community_hybrid_private_public clouds

b) Cloud computing based on service models:

Cloud computing is not a single technological device, like a smartphone or microprocessor. It’s a system that’s mainly consists of three services, which are as follows:

Software-as-a-service (SaaS):

SaaS
SaaS
  • “On-demand software” is another name for SaaS. It is software that uses cloud service providers to host its apps. A web browser and an internet connection are essential for users to access these applications.
  • Here, you can purchase the final product straight from the cloud providers on a subscription basis. It could be an application or a piece of software. The client retains authority over the software environment as part of this service, but they do not manage any hardware.
  • Certain AWS and Microsoft Azure products offer SaaS.

Infrastructure-as-a-service (IaaS):

IaaS
IaaS
  • Another name of IaaS is Hardware as a Service (HaaS). It’s an internet-based computing infrastructure management system. The primary benefit of using IaaS is that it relieves users of the burden and expense associated with owning and maintaining physical servers.
  • This category includes IT infrastructure, such as servers and networks, that you can pay for as you go through a cloud provider. One of the greatest features of this service is that it allows you to access the services you have provided, and some of them even give you root access. A great illustration of infrastructure as a service (IaaS) is EC2, or the AWS Elastic Compute Cloud.

Platform-as-a-service (PaaS):

PaaS
PaaS
  • The PaaS cloud computing platform is designed to help programmers create, test, deploy, and manage applications. According to this concept, you can install your code and applications on a pre-built platform that the cloud providers provide. The infrastructure is not your concern; you only need to handle the code and applications. One example of a PaaS cloud is AWS Elastic Beanstalk.

 Difference between SaaS, IaaS and PaaS

The differences between IaaS, PaaS, and SaaS are in the table below:

IaaS_SaaS_PaaS
IaaS_SaaS_PaaS

Benefits of Cloud Computing

  • Data backup and restoration: Using the cloud to store data makes it simpler to obtain backup copies and restore original files.
  • Better collaboration: Cloud apps facilitate the quick and simple sharing of data on the cloud through shared storage among groups of people.
  • Outstanding accessibility: Using internet, we may quickly and easily retrieve stored information on the cloud from anywhere at any time. By ensuring that our data is constantly available, an Internet cloud architecture boosts organizational productivity and efficiency.
  • Low maintenance costs: Cloud computing saves businesses money on both software and hardware management.
  • Pay-per-use services for Internet access: Customers can access cloud services through Application Programming Interfaces (APIs) and pay on the basis of usage.
  • Mobility: Cloud computing makes it simple to access all cloud data from a mobile device.
  • Infinite amount of storage: The cloud provides enormous storage capacity to keep all of our vital data, including papers, photos, audio, video, and more, in one location.
  • Data protection: The main benefit among all is data security. Cloud computing guarantees the safe handling and storage of data by providing numerous cutting-edge security measures.

Who uses cloud-based services?

Several globally recognized companies have already made the transition to the cloud.

cloud-based_services
cloud_based_services

Here are a few instances:

  • Pinterest
  • Spotify
  • Netflix
  • Expedia

Finally, in the digital age, cloud computing has completely changed how we access, store, and use data and apps. Due to its affordability, scalability, and flexibility, it has become a vital tool for individuals. And also,enterprises looking to prosper in the quickly changing technology scene. To effectively reduce risks, it is crucial to balance the benefits against any potential drawbacks and implement the necessary measures.

Read Also:
What is Cloud Storage – Architecture, Types, Advantages & Disadvantages
What is IoT Edge Computing – All Types, Architecture & Advantages
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