Which cloud computing concept is best described as focusing on the replacement of physical hardware at a customers location with cloud based resources?
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The cloud is a hot topic for small businesses all the way to global enterprises, but remains a broad concept that covers a lot of online territory. As you begin to consider switching your business to the cloud, whether it be for application or infrastructure deployment, it is more important than ever to understand the differences and advantages of the various cloud services. Though as-a-service types are growing by the day, there are usually three models of cloud service to compare:
For each of these, we’ll look at the concept, benefits, and variances. We’ll also help you understand the key differences among SaaS, PaaS, and IaaS—so you can best choose one for your organization. (More interested in cloud setup? Learn more about public, private, and hybrid cloud differences.) Key differencesCommon examples of SaaS, PaaS, & IaaS
SaaS: Software as a ServiceSoftware as a Service, also known as cloud application services, represents the most commonly utilized option for businesses in the cloud market. SaaS utilizes the internet to deliver applications, which are managed by a third-party vendor, to its users. A majority of SaaS applications run directly through your web browser, which means they do not require any downloads or installations on the client side. SaaS DeliveryDue to its web delivery model, SaaS eliminates the need to have IT staff download and install applications on each individual computer. With SaaS, vendors manage all potential technical issues, such as data, middleware, servers, and storage, resulting in streamlined maintenance and support for the business. SaaS AdvantagesSaaS provides numerous advantages to employees and companies by greatly reducing the time and money spent on tedious tasks such as installing, managing, and upgrading software. This frees up plenty of time for technical staff to spend on more pressing matters and issues within the organization. SaaS CharacteristicsThere are a few ways to help you determine when SaaS is being utilized:
When to Use SaaSSaaS may be the most beneficial option in several situations, including:
SaaS Limitations & Concerns
Examples of SaaSPopular examples of SaaS include:
PaaS: Platform as a ServiceCloud platform services, also known as Platform as a Service (PaaS), provide cloud components to certain software while being used mainly for applications. PaaS delivers a framework for developers that they can build upon and use to create customized applications. All servers, storage, and networking can be managed by the enterprise or a third-party provider while the developers can maintain management of the applications. PaaS DeliveryThe delivery model of PaaS is similar to SaaS, except instead of delivering the software over the internet, PaaS provides a platform for software creation. This platform is delivered via the web, giving developers the freedom to concentrate on building the software without having to worry about operating systems, software updates, storage, or infrastructure. PaaS allows businesses to design and create applications that are built into the PaaS with special software components. These applications, sometimes called middleware, are scalable and highly available as they take on certain cloud characteristics. PaaS AdvantagesNo matter the size of your company, using PaaS offers numerous advantages, including:
PaaS CharacteristicsPaaS has many characteristics that define it as a cloud service, including:
When to Use PaaSUtilizing PaaS is beneficial, sometimes even necessary, in several situations. For example, PaaS can streamline workflows when multiple developers are working on the same development project. If other vendors must be included, PaaS can provide great speed and flexibility to the entire process. PaaS is particularly beneficial if you need to create customized applications. This cloud service also can greatly reduce costs and it can simplify some challenges that come up if you are rapidly developing or deploying an app. PaaS Limitations & Concerns
Examples of PaaSPopular examples of PaaS include:
IaaS: Infrastructure as a ServiceCloud infrastructure services, known as Infrastructure as a Service (IaaS), are made of highly scalable and automated compute resources. IaaS is fully self-service for accessing and monitoring computers, networking, storage, and other services. IaaS allows businesses to purchase resources on-demand and as-needed instead of having to buy hardware outright. IaaS DeliveryIaaS delivers cloud computing infrastructure, including servers, network, operating systems, and storage, through virtualization technology. These cloud servers are typically provided to the organization through a dashboard or an API, giving IaaS clients complete control over the entire infrastructure. IaaS provides the same technologies and capabilities as a traditional data center without having to physically maintain or manage all of it. IaaS clients can still access their servers and storage directly, but it is all outsourced through a “virtual data center” in the cloud. As opposed to SaaS or PaaS, IaaS clients are responsible for managing aspects such as applications, runtime, OSes, middleware, and data. However, providers of the IaaS manage the servers, hard drives, networking, virtualization, and storage. Some providers even offer more services beyond the virtualization layer, such as databases or message queuing. IaaS AdvantagesIaaS offers many advantages, including:
IaaS CharacteristicsCharacteristics that define IaaS include:
When to Use IaaSJust as with SaaS and PaaS, there are specific situations when IaaS is most advantageous.
Anytime you are unsure of a new application’s demands, IaaS offers plenty of flexibility and scalability. IaaS Limitations & ConcernsMany limitations associated with SaaS and PaaS models – such as data security, cost overruns, vendor lock-in and customization issues – also apply to the IaaS model. Particular limitations to IaaS include:
Examples of IaaSPopular examples of IaaS include:
Each cloud model offers specific features and functionalities, and it is crucial for your organization to understand the differences. Whether you need cloud-based software for storage options, a smooth platform that allows you to create customized applications, or complete control over your entire infrastructure without having to physically maintain it, there is a cloud service for you. No matter which option you choose, migrating to the cloud is the future of business and technology. XaaS: Everything as a ServiceOne term you’re likely seeing more frequently in the world is XaaS, short for Everything as a Service. XaaS refers to the highly-individualized, responsive, data-driven products and offerings that are fully controlled by customers—and the data they provide via everyday IoT-powered sources like cell phones and thermostats. By using that data generated over the cloud, businesses can innovate faster, deepen their customer relationships, and sustain the sale beyond the initial product purchase. XaaS is a critical enabler of the Autonomous Digital Enterprise. Related reading
Other “as a service” offerings:
Defending the Whole, IaaS, PaaS, and SaaS from Mark Nunnikhoven Original reference images: These postings are my own and do not necessarily represent BMC's position, strategies, or opinion. See an error or have a suggestion? Please let us know by emailing . What is the name of cloud computing technology which gives the possibility of using physical devices via the internet as a service?Infrastructure as a service (IaaS)
The most basic category of cloud computing services. With IaaS, you rent IT infrastructure—servers and virtual machines (VMs), storage, networks, operating systems—from a cloud provider on a pay-as-you-go basis.
What are the 4 types of cloud computing?There are four main types of cloud computing: private clouds, public clouds, hybrid clouds, and multiclouds. There are also three main types of cloud computing services: Infrastructure-as-a-Service (IaaS), Platforms-as-a-Service (PaaS), and Software-as-a-Service (SaaS).
What cloud service model is the closest to managing physical servers?IaaS, or infrastructure as a service, is on-demand access to cloud-hosted physical and virtual servers, storage and networking - the backend IT infrastructure for running applications and workloads in the cloud.
What is IaaS PaaS SaaS in cloud computing?IAAS gives access to the resources like virtual machines and virtual storage. PAAS give access to run time environment to deployment and development tools for application. SAAS give access to the end user. It is a service model that provides visualized computing resources over the internet.
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