Cloud Computing provides us means of accessing the applications as utilities over the Internet. It allows us to create, configure, and customize the applications online.
The termCloudrefers to aNetworkorInternet. In other words, we can say that Cloud is something, which is present at remote location. Cloud can provide services over public and private networks, i.e., WAN, LAN or VPN.
Applications such ase-mail, web conferencing, customer relationship management (CRM) execute on cloud.
Cloud Computingrefers tomanipulating, configuring,andaccessingthe hardware and software resources remotely. It offers online data storage, infrastructure, and application.
Cloud computing offers platform independency, as the software is not required to be installed locally on the PC. Hence, the Cloud Computing is making our business applicationsmobileandcollaborative.
There are certain services and models working behind the scene making the cloud computing feasible and accessible to end users. Following are the working models for cloud computing:
Deployment models define the type of access to the cloud, i.e., how the cloud is located? Cloud can have any of the four types of access: Public, Private, Hybrid, and Community.
Thepublic cloudallows systems and services to be easily accessible to the general public. Public cloud may be less secure because of its openness.
Theprivate cloudallows systems and services to be accessible within an organization. It is more secured because of its private nature.
Thecommunity cloudallows systems and services to be accessible by a group of organizations.
Thehybrid cloudis a mixture of public and private cloud, in which the critical activities are performed using private cloud while the non-critical activities are performed using public cloud.
Cloud computing is based on service models. These are categorized into three basic service models which are –
Anything-as-a-Service (XaaS) is yet another service model, which includes Network-as-a-Service, Business-as-a-Service, Identity-as-a-Service, Database-as-a-ServiceorStrategy-as-a-Service.
TheInfrastructure-as-a-Service (IaaS)is the most basic level of service. Each of the service models inherit the security and management mechanism from the underlying model, as shown in the following diagram:
IaaSprovides access to fundamental resources such as physical machines, virtual machines, virtual storage, etc.
PaaS provides the runtime environment for applications, development and deployment tools, etc.
SaaSmodel allows to use software applications as a service to end-users.
The concept ofCloud Computingcame into existence in the year 1950 with implementation of mainframe computers, accessible viathin/static clients. Since then, cloud computing has been evolved from static clients to dynamic ones and from software to services. The following diagram explains the evolution of cloud computing:
Cloud Computing has numerous advantages. Some of them are listed below –
One can access applications as utilities, over the Internet.
One can manipulate and configure the applications online at any time.
It does not require to install a software to access or manipulate cloud application.
Cloud Computing offers online development and deployment tools, programming runtime environment throughPaaS model.
Cloud resources are available over the network in a manner that provide platform independent access to any type of clients.
Cloud Computing offerson-demand self-service. The resources can be used without interaction with cloud service provider.
Cloud Computing is highly cost effective because it operates at high efficiency with optimum utilization. It just requires an Internet connection
Cloud Computing offers load balancing that makes it more reliable.
Although cloud Computing is a promising innovation with various benefits in the world of computing, it comes with risks. Some of them are discussed below:
It is the biggest concern about cloud computing. Since data management and infrastructure management in cloud is provided by third-party, it is always a risk to handover the sensitive information to cloud service providers.
Although the cloud computing vendors ensure highly secured password protected accounts, any sign of security breach may result in loss of customers and businesses.
It is very difficult for the customers to switch from oneCloud Service Provider (CSP)to another. It results in dependency on a particular CSP for service.
This risk involves the failure of isolation mechanism that separates storage, memory, and routing between the different tenants.
In case of public cloud provider, the customer management interfaces are accessible through the Internet.
It is possible that the data requested for deletion may not get deleted. It happens because either of the following reasons
There are four key characteristics of cloud computing. They are shown in the following diagram:
Cloud Computing allows the users to use web services and resources on demand. One can logon to a website at any time and use them.
Since cloud computing is completely web based, it can be accessed from anywhere and at any time.
Cloud computing allows multiple tenants to share a pool of resources. One can share single physical instance of hardware, database and basic infrastructure.
It is very easy to scale the resources vertically or horizontally at any time. Scaling of resources means the ability of resources to deal with increasing or decreasing demand.
The resources being used by customers at any given point of time are automatically monitored.
In this service cloud provider controls and monitors all the aspects of cloud service. Resource optimization, billing, and capacity planning etc. depend on it.
- What is cloud computing? - Definition from WhatIs.com - March 4th, 2019
- Cloud - Wikipedia - February 19th, 2019
- Cloud computing: A complete guide | IBM - February 7th, 2019
- FusionCloud Full-Stack Private Cloud - Huawei Enterprise - February 4th, 2019
- What is cloud computing? | IBM - January 24th, 2019
- What Is Cloud Computing? | The Basics of Digital Outsourcing - January 22nd, 2019
- Cloud Computing - Yahoo - January 13th, 2019
- Best Sellers in Cloud Computing - amazon.com - January 2nd, 2019
- Cloud Computing Explained by Common Craft (VIDEO) - January 2nd, 2019
- Cloud Computing Trends: 2017 State of the Cloud Survey - December 25th, 2018
- 15 Top Cloud Computing Service Provider Companies - December 25th, 2018
- Cloud computing: Hardware & Software Security: Online ... - December 23rd, 2018
- Cloud Solutions from Cisco - Cisco - December 23rd, 2018
- Cloud Computing | The MIT Press - December 23rd, 2018
- Learn Cloud Computing Tutorial - javatpoint - December 23rd, 2018
- Standards - IEEE Cloud Computing - December 23rd, 2018
- Benefits of cloud computing | IBM Cloud - November 10th, 2018
- Cloud Computing Trends: 2018 State of the Cloud Survey - November 10th, 2018
- What is cloud computing? - LinkedIn - November 5th, 2018
- What is cloud computing? | TechRadar - September 25th, 2018
- Cloud Computing 2nd Edition: 2018: Mr. Ray Rafaels ... - September 23rd, 2018
- Cloud Computing - Articles & Whitepapers | Oracle Technology ... - September 23rd, 2018
- Cloud Computing: Theory and Practice: Dan C. Marinescu ... - September 23rd, 2018
- Programming Lesson Plan: Program Your Partner - September 5th, 2018
- Cloud Computing | Definition of Cloud Computing by Merriam ... - July 26th, 2018
- Cloud computing information, news and tips ... - April 30th, 2018
- Cloud computing - A simple introduction - Explain that Stuff - March 15th, 2018
- Doug H. - Boston Cloud Computing Meetup (Boston, MA) | Meetup - December 16th, 2017
- Cloud computing at Ifes, IFs, and hospitals | RNP - December 16th, 2017
- Cisco and Google Find Mutual Interest in Cloud Computing ... - October 28th, 2017
- How to Invest in Cloud Computing -- The Motley Fool - October 28th, 2017
- What is cloud computing? Everything you need to know now ... - September 19th, 2017
- How The Automotive Industry Is Leveraging Cloud Computing - CXOToday.com - September 7th, 2017
- Huawei ups its bet on cloud computing with broader support for Microsoft apps - GeekWire - September 7th, 2017
- Cloud computing to drive Billabong's omnichannel experience - Chain Store Age - September 6th, 2017
- Cloud Computing Testbed Chameleon Renewed for Second Phase - HPCwire - September 6th, 2017
- The Software Alliance Advances Discussion on India's Cloud Computing Policy - ETAuto.com - September 6th, 2017
- Assessing Alibaba's Cloud Computing Opportunity - Market Realist - Market Realist - September 2nd, 2017
- 3 No-Brainer Stocks to Buy in Cloud Computing - Motley Fool - September 1st, 2017
- Telecom ponders future amid surging cloud computing popularity - TechTarget (blog) - September 1st, 2017
- Heads in the cloud: banks inch closer to cloud take-up - Risk.net (subscription) - August 31st, 2017
- Walmart Taps Nvidia for Massive Cloud to Take on Amazon - Fortune - August 31st, 2017
- Guest Commentary: Cloud computing tackles emerging cyber threats - Security Systems News - August 31st, 2017
- It's Only the Early Innings for Cloud Computing - Morningstar.com - August 29th, 2017
- What are the key benefits of cloud computing? - Information Age - August 29th, 2017
- VMworld 2017: Everything you need to know about VMware's hybrid cloud strategy - ZDNet - August 29th, 2017
- Saudi Telecom Company creates cloud computing giant - ComputerWeekly.com - August 29th, 2017
- Now with VMware and Pivotal, the Cloud Native Computing Foundation is becoming the hub of enterprise tech - GeekWire - August 29th, 2017
- Cloud Computing | HHS.gov - August 27th, 2017
- Oppo, Vivo plan to move cloud storage to India - Economic Times - August 27th, 2017
- Top 2 aspects of cloud computing you need to consi - Accountingweb.com (blog) - August 27th, 2017
- Biz Cloud Computing - Four States Homepage - August 27th, 2017
- Marketo decides to go all-in on cloud computing, and picks Google as its home - GeekWire - August 27th, 2017
- Cloud Computing Confirmed for Travers | TDN | Thoroughbred Daily ... - Thoroughbred Daily News - August 27th, 2017
- Why 2017 Is The Year To Understand Cloud Computing - Nasdaq - August 23rd, 2017
- Microsoft acquires cloud computing firm Cycle Computing to boost ... - The News Minute - August 23rd, 2017
- The Benefits of Multi-Cloud Computing Architectures for MSPs - MSPmentor - August 23rd, 2017
- VMware shares to surge more than 20% because the Amazon cloud threat is overblown: Analyst - CNBC - August 23rd, 2017
- Goldman Sachs just poured $45 million into a company picking up Amazon's slack in the cloud - Yahoo Finance - August 23rd, 2017
- Cloud Computing confirmed for Travers Stakes 2017 - Horse Racing ... - Horse Racing Nation - August 23rd, 2017
- Cloud computing in focus at e-Commerce forum - Oman Tribune - August 21st, 2017
- World's Largest Open Source Cloud Computing Summit to be Hosted in Sydney - Business Wire (press release) - August 21st, 2017
- AT&T, GE and Oracle offer juiciest cloud salaries, new data reveals - Cloud Tech - August 21st, 2017
- Cycle Computing will make Microsoft Azure more appealing to more enterprises - TechRepublic - August 21st, 2017
- Manage containers in cloud computing to prevent sprawl, cut costs - TechTarget - August 19th, 2017
- Business continuity is the ultimate killer application for cloud - ZDNet - August 19th, 2017
- Thailand urged to opt for cloud computing - The Nation - August 19th, 2017
- Cyberattacks Rain Down on Cloud Computing Infrastructure ... - Bloomberg BNA - August 19th, 2017
- Brown to decide Monday if Cloud Computing runs in the Travers - Horse Racing Nation - August 19th, 2017
- Cloud computing reversal: From 'go away' to 'I can't miss out' - InfoWorld - August 18th, 2017
- Alibaba Stock: Why Cloud Computing Could Be Equivalent to AWS - BNL Finance (press release) (registration) (blog) - August 18th, 2017
- Microsoft Acquires A Cloud Technology Company From Right Under Google And Amazon's Noses - Inc.com - August 18th, 2017
- Alibaba's cloud computing revenue almost doubles - SiliconANGLE News (blog) - August 18th, 2017
- Big Data and Cloud Computing Software, Platforms, and Infrastructure 2017 - 2022 - Markets Insider - August 18th, 2017
- Microsoft acquires cloud-computing orchestration vendor Cycle Computing - ZDNet - August 16th, 2017
- Cloud computing decision guide: Breaking down 7 top solutions for healthcare - Healthcare IT News - August 16th, 2017
- Amazon: Earnings Are Not The Holy Grail - Seeking Alpha - August 16th, 2017
- Notes: Cloud Computing still in running for Travers - Albany Times Union - August 14th, 2017
- Assessing the key reasons behind a multi-cloud strategy - Cloud Tech - August 14th, 2017
- Intel runs rule over new data centre storage design - Cloud Tech - August 14th, 2017