Cloud Computing Tutorialspoint

Cloud Computing Tutorialspoint – 1 CLOUD COMPUTING OVERVIEW Copyright Cloud Computing allows us to access applications using the internet. It allows us to create, configure and customize online applications. What is the cloud? The term cloud refers to a network or the Internet. In other words, we can say that a cloud is something that exists in distant places. A cloud can provide services over a network, ie. in public networks or private networks ie. WAN, LAN or VPN. Applications such as web conferencing and customer relationship management (CRM) run in the cloud. What is cloud computing? Cloud Computing is the process of manipulating, configuring and accessing applications online. Offers online data storage, infrastructure and access.

2 We don’t need to install a piece of software on a local computer, and thus cloud computing overcomes platform-specific issues. Therefore, Cloud Computing makes our business application mobile and collaborative. There are basic concepts, cloud computing capabilities and some services and models that work behind the scenes that are available to end users. The following are cloud computing business models: Deployment models Service models Deployment models Deployment models define the type of access to the cloud ie. How is the cloud located? Cloud can be of four types: public, private, hybrid and community. Public Cloud Public Cloud makes systems and services easily accessible to the public. A public cloud may be less secure due to its transparency, e.g. Private Cloud A private cloud provides access to systems and services within an organization.

Cloud Computing Tutorialspoint

Cloud Computing Tutorialspoint

3 It increases security due to its private nature. Community Cloud Community Cloud allows systems and services to be shared across a group of organizations. Hybrid cloud A hybrid cloud is a mix of public and private cloud. However, critical activities are performed using a private cloud, while non-critical activities are performed using a public cloud. Service Models Service models are reference models based on Cloud Computing. They can be divided into three main service models as listed below: 1. Infrastructure as a Service (IaaS) 2. Platform as a Service (PaaS) 3. Software as a Service (SaaS) There are other service models, all of which can take the form of XaaS ie. Everything is service. It can be Network as a Service, Business as a Service, Identity as a Service, Database as a Service or Strategy as a Service. Infrastructure as a Service (IaaS) is the most basic level of service. Each of the service models uses a basic service model ie. each inherits the security and control mechanism from the base model as shown in the diagram below:

Cloud Service Model

4 Infrastructure as a Service (IaaS) IaaS includes physical resources, virtual machines, virtual storage, etc. provides access to key resources such as Platform as a Service (PaaS) PaaS applications, development and deployment tools, etc. The SaaS as a Service (SaaS) model allows software applications to be delivered as a service to end users. History The concept of cloud computing originated in the 1950s with the introduction of mainframe computers accessible via thin/static clients. Since then, cloud computing has moved from static clients to dynamic clients from software to services. The following diagram explains the evolution of cloud computing:

5 advantages Cloud computing has several advantages. Some of them are listed below: Internet allows access to applications such as utilities. Run the application online anytime. No specific software installation is required to access or manage the cloud application. Cloud Computing offers online development and deployment tools and a software-as-a-service model. Cloud resources provide platform-independent access to any client over the network. Cloud Computing offers self-service. The resources can be used without interaction with the cloud service provider. Cloud Computing is very expensive because it works at high efficiency with higher usage. It only requires an internet connection. Cloud Computing offers load balancing which makes it more reliable.

6 Risks Although Cloud Computing is a major innovation in the world of computing, cloud computing also has its drawbacks. Some of them are discussed below: Security and Privacy This is the biggest concern about cloud computing. Since cloud data and infrastructure management is provided by third parties, giving sensitive information to such providers is always risky. Although cloud computing providers provide more secure password-protected accounts, any sign of a security breach will result in the loss of customers and business. Blocking It is very difficult for customers to switch from one cloud service provider (CSP) to another. It depends on the specific CSP for the service. Isolation failure This risk involves the failure of the isolation mechanism that separates storage, memory, and routing between different tenants.

7 Management Interface Compromise In the case of a public cloud provider, customer management interfaces can be accessed over the web. Deleting Insecure or Incomplete Data Data requested to be deleted may not be deleted. This happens either because additional copies of the data are stored but are not, or because the damaged disk is storing data from other tenants. Characteristics There are four main characteristics of cloud computing. These are shown in the diagram below: On-Demand Self-Service Cloud Computing allows users to access web services and resources as needed. You can access the website and use them at any time. Wide network access

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8 Since Cloud Computing is completely web-based, it can be accessed anywhere and anytime. Resource pool cloud computing allows multiple tenants to share a pool of resources. A single hardware, database, and underlying infrastructure can share a physical instance. Rapid elasticity It is very easy to scale resources up or down at any time. Resources used by clients or currently assigned to clients are automatically tracked and resourced. These service delivery models and implementation models are described in the section above.

Contents A Guide to Cloud Computing … 2 Intended Audience … 2 Prerequisites … 2 Copyright Disclaimer … 2 Cloud Computing – An Overview … 9 What is the Cloud? … 9 What is cloud computing?. .. 9 bases

Cloud Computing Tutorial CLOUD COMPUTINGTUTORIAL by i TUTORIAL Cloud Computing Tutorial provides access to Cloud Computing applications.

Cloud Computing Tutorialspoint

Contents A Guide to Cloud Computing … 2 Intended Audience … 2 Prerequisites … 2 Copyright Disclaimer … 2 Cloud Computing – An Overview …

Tutorials Point (pdf)

Commercial Software Licensing Chapter 12: Chapter Overview Prepared by DoD ESI January 2013 Most software licenses today are either perpetual or subscription-based. Perpetual licenses own the software

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Cloud Computing Tutorialspoint


Pdf) Overview Of Cloud Computing And Its Types

Cloud Infrastructure Studies Pothamsetty Nagaraju 1, K.R.M.Rao 2 1 Pursuing M.Tech (CSE), Nalanda Institute of Engineering and Technology, Siddharth Nagar, Sattenapalli, Guntur., Affiliated with JNTUK,

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Why private cloud? O P E R A T I O N S V I E W Nenad BUNCIC EPFL, SI-EXHEB 1 What is the cloud? The National Institute of Standards and Technology (NIST) definition of cloud technology

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