Public cloud or external cloud describes cloud computing in the traditional mainstream sense, whereby resources are dynamically provisioned on a fine-grained, self-service basis over the Internet, via web applications/web services, from an off-site third-party provider who shares resources and bills on a fine-grained utility computing basis. Cloud computing is a set of principles and approaches to deliver computing infrastructure, services, platforms, and applications—sourced from clouds—to users on-demand across a network. 71 Platform as a Service (PaaS) consumers do not manage or control the underlying cloud infrastructure including network, servers, operating systems, or storage, but have control over the deployed applications and possibly configuration settings for the application-hosting environment.

Cloud computing is a method for delivering information technology (IT) services in which resources are retrieved from the Internet through web-based tools and applications, as opposed to a direct connection to a server. Hosts on a network include clients and servers – that send or receive data, services or applications. Infrastructure as a Service (IaaS): The most basic form of cloud computing, IaaS gives users access to infrastructure basics such as server space, data storage, and networking, which can be provisioned via an API.

Software as a service is where computer applications are accessed over the Internet rather than being installed on a local computing device or in a local data centre. As already mentioned, cloud computing can encompass activities such as the use of social networking sites and other forms of interpersonal computing as examined on the Web 2.0 page However, most of the time cloud computing is concerned with accessing online software applications, data storage and processing power. I have already said that cloud computing is where software applications, processing power, data and potentially even artificial intelligence are accessed over the Internet.

Cloud computing is where software applications, processing power, data and artificial intelligence are accessed over the Internet. Futurist Steve Brown describes the technology potential enabled by next-generation data centers in which infrastructure is modernized for cloud deployments and applications are optimized for cloud services delivery. It is common to categorize cloud computing services as Infrastructure as a Service (IaaS), Platform as a Service (PaaS) or Software as a Service (SaaS).

Infrastructure as a service provides companies with computing resources including servers, networking, storage, and data center space on a pay-per-use basis. Platform as a Service removes the need for organizations to manage the underlying infrastructure (usually servers and operating systems) and allows them to focus on the deployment and management of their applications. Software-as-a-Service (SaaS) is the delivery of applications-as-a-service, probably the version of cloud computing that most people are used to. The underlying hardware and operating system is irrelevant to the end user, who will access the service via a web browser or app; it is often bought on a per-seat or per-user basis.

Cloud computing is becoming the default option for many apps: software vendors are increasingly offering their applications as services over the internet rather than standalone products as they try to switch to a subscription model. Cloud computing is the delivery of on-demand computing services – from applications to storage and processing power – typically over the internet and on a pay-as-you-go basis. Public clouds are owned and operated by a third-party cloud service provider , which deliver their computing resources like servers and storage over the Internet.

Platform-as-a-service (PaaS) refers to cloud computing services that supply an on-demand environment for developing, testing, delivering and managing software applications. Most cloud computing services fall into three broad categories: infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (Saas). Yet, these exceptions aside, the evolution is clear, as is the growth of a variety of cloud services in the public cloud with mainly IaaS (Infrastructure as a Service), BPaaS (Business Process as a Service) and SaaS (Software as a Service) all growing, with a leading growth position for cloud system infrastructure services (IaaS).

If you look at today’s overall customer relationship management and customer-facing applications environment, with a big role for the sales and marketing technology stacks, you’ll notice that SaaS de facto is the service model in many applications beyond CRM and including, among others, web and customer analytics platform, marketing automation tools, content marketing software, integrated marketing suites and so on. As mentioned in our cloud computing definitions section, the SaaS cloud services model is all about software applications and is the most common and best-known of all three main cloud services, with IaaS ranking second and PaaS third. When looking at some trends in cloud computing and the rapid growth of public cloud in 2016, 2017 and beyond Gartner’s Sid Nag pointed out how there is a shift away from legacy IT services (often standing in the way of digital transformation and the capacities needed to perform as a digital business in a DX economy) and that enterprises indeed move away from data center build-outs as they move their infrastructure to the public cloud”.

According to Jennifer the main drivers of private cloud adoption are, among others enhanced IT infrastructure manageability and flexibility, obviously along with the security, regulation and compliance reasons we mentioned before and which equally obviously appeal more (in general) to industries such as financial services (regulation) but also to companies who are not ready to make the move to public cloud as they still have security and privacy concerns, often when testing the waters. The freeing up of resources: these could be IT resources that are deployed to sustain the business in its goals rather than be busy with traditional IT tasks but also freeing up other resources on a computing, network, capability and human level (e.g.: cloud-based applications in areas such as document capture and management can enable users to scan documents on the fly, close to the source and into the line of business applications, freeing up resources and speeding up processes if they are easy to use or embedded in the LOB application; web-based capture is mostly a form of distributed capture)

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