Cloud computing is a general term for anything that involves delivering hosted services over the Internet. These services are broadly divided into three categories: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). The name cloud computing was inspired by the cloud symbol that's often used to represent the Internet in flowcharts and diagrams.
A cloud service has three distinct characteristics that differentiate it from traditional web hosting. It is sold on demand, typically by the minute or the hour; it is elastic -- a user can have as much or as little of a service as they want at any given time; and the service is fully managed by the provider (the consumer needs nothing but a personal computer and Internet access). Significant innovations in virtualization and distributed computing, as well as improved access to high-speed Internet, have accelerated interest in cloud computing.
A cloud can be private or public. A public cloud sells services to anyone on the Internet. (Currently, Amazon Web Services is the largest public cloud provider.) A private cloud is a proprietary network or a data center that supplies hosted services to a limited number of people. Private or public, the goal of cloud computing is to provide easy, scalable access to computing resources and IT services.
Private cloud services are delivered from a business's data center to internal users. This model offers the versatility and convenience of the cloud, while preserving the management, control and security common to local data centers. Internal users may or may not be billed for services throughIT chargeback. Common private cloud technologies and vendors include VMware and OpenStack.
In the public cloud model, a third-party cloud service provider delivers the cloud service over the internet. Public cloud services are sold on demand, typically by the minute or hour, though long-term commitments are available for many services. Customers only pay for theCPUcycles,storageorbandwidththey consume. Leading public cloud service providers include Amazon Web Services (AWS), MicrosoftAzure,IBMandGoogle Cloud Platform.
A hybrid cloud is a combination of public cloud services and an on-premises private cloud, with orchestration and automation between the two. Companies can run mission-critical workloads or sensitive applications on the private cloud and use the public cloud to handle workload bursts or spikes in demand.The goal of a hybrid cloud is to create a unified, automated, scalable environment that takes advantage of all that a public cloud infrastructure can provide, while still maintaining control over mission-critical data.
In addition, organizations are increasingly embracing a multicloud model, or the use of multiple infrastructure-as-a-service providers. This enables applications to migrate between different cloud providers or to even operate concurrently across two or more cloud providers. Organizations adopt multicloud for various reasons. For example, they could do so to minimize the risk of a cloud service outage or to take advantage of more competitive pricing from a particular provider. Multicloud implementation and application development can be a challenge because of the differences between cloud providers' services and application program interfaces (APIs). Multicloud deployments should become easier, however, as providers' services and APIs converge and become more homogeneous through industry initiatives such as the Open Cloud Computing Interface.
Cloud computing boasts several attractive benefits for businesses and end users. Five of the main benefits of cloud computing are:
Although cloud computing has changed over time, it has been divided into three broad service categories: infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (SaaS).
IaaS providers, such as AWS, supply avirtual serverinstance and storage, as well as APIs that enable users to migrateworkloadsto aVM. Users have an allocated storage capacity and can start, stop, access and configure the VM and storage as desired. IaaS providers offer small, medium, large, extra-large and memory- or compute-optimized instances, in addition to customized instances, for various workload needs.
In the PaaS model, cloud providers host development tools on their infrastructures. Users access these tools over the internet using APIs, webportalsor gateway software. PaaS is used for general software development, and many PaaS providers host the software after it's developed. Common PaaS providers include Salesforce'sForce.com,AWS Elastic BeanstalkandGoogle App Engine.
SaaS is a distribution model that delivers software applications over the internet; these applications are often calledweb services. Users can access SaaS applications and services from any location using a computer or mobile device that has internet access. One common example of a SaaS application is MicrosoftOffice 365for productivity and email services.
Cloud providers are competitive, and they constantly expand their services to differentiate themselves. This has led public IaaS providers to offer far more than common compute and storage instances.
For example, serverless, or event-driven computing is a cloud service that executes specific functions, such as image processing and database updates. Traditional cloud deployments require users to establish a compute instance and load code into that instance. Then, the user decides how long to run -- and pay for -- that instance.
With serverless computing, developers simply create code, and the cloud provider loads and executes that code in response to real-world events, so users don't have to worry about the server or instance aspect of the cloud deployment. Users only pay for the number of transactions that the function executes. AWS Lambda, Google Cloud Functions and Azure Functions are examples of serverless computing services.
Public cloud computing also lends itself well to big data processing, which demands enormous compute resources for relatively short durations. Cloud providers have responded with big data services, including Google BigQuery for large-scale data warehousing and Microsoft Azure Data Lake Analytics for processing huge data sets.
Another crop of emerging cloud technologies and services relates to artificial intelligence (AI) and machine learning. These technologies build machine understanding, enable systems to mimic human understanding and respond to changes in data to benefit the business. Amazon Machine Learning, Amazon Lex, Amazon Polly, Google Cloud Machine Learning Engine and Google Cloud Speech API are examples of these services.
Security remains a primary concern for businesses contemplating cloud adoption -- especially public cloud adoption. Public cloud service providers share their underlying hardware infrastructure between numerous customers, as public cloud is amulti-tenant environment. This environment demands copious isolation between logical compute resources. At the same time, access to public cloud storage and compute resources is guarded by account login credentials.
Many organizations bound by complexregulatoryobligations andgovernancestandards are still hesitant to place data or workloads in the public cloud for fear of outages, loss or theft. However, this resistance is fading, as logical isolation has proven reliable, and the addition of dataencryptionand various identity and access management tools has improved security within the public cloud.
Here is the original post:
What is cloud computing? - Definition from WhatIs.com
- What is cloud computing? | Google Cloud - October 16th, 2019
- Microsoft may be all-in on cloud computing, but Azure ... - May 8th, 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
- Cloud Computing Overview - tutorialspoint.com - 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