Cloud computing is the delivery of computing services over the internet. It provides an easy way for businesses to access the latest technologies with minimal capital investment in hardware, software and personnel.
Cloud computing can be divided into three categories: Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). The differences between these models will be discussed below.
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage and applications). These resources can be rapidly provisioned and released with minimal management effort or service provider interaction. A cloud can be private such as an internal business intranet or public like Amazon EC2 (Elastic Compute Cloud), which means that it is accessible over the internet.
Cloud computing relies on sharing of resources to achieve coherence and economies of scale not possible with traditional hardware alone. Cloud computing services typically use a pay-as-you-go model.
Models of cloud computing services vary in their level of customization and enablement of innovation. The following is a breakdown of the models.
Software as a Service (SaaS)
This is the most common model, where software applications are run on a cloud infrastructure. The software vendor hosts and manages the application for the user, who does not manage it. SaaS applications are easy to access from any Internet connected device and often feature real-time data synchronization. They can be made available on a pay per use basis or subscription basis.
Software as a Service (SaaS) -Service is delivered via “cloud” but has the customizability of an internal solution.
SaaS is a software delivery model in which applications are hosted by a service provider and made available to customers over the Internet. SaaS differs from other cloud computing models in that it often offers more customizability than PaaS or IaaS, while still maintaining some of the benefits of those models (such as flexibility and scalability).
Platform as a Service (PaaS) -Service infrastructure is delivered where application “platform” is built and run. This may also include an operating system for the application.
PaaS is a cloud computing model that provides a platform for application development and deployment. PaaS offers all the necessary tools to build and run an application, including the operating system, programming language runtime, database, web server etc., but it does not provide any infrastructure such as virtual machines or storage space.
PaaS is also known as “Platform-as-a-Service” because it provides developers with an entire software stack: network connectivity, security etc., so they can focus on writing code rather than building infrastructure from scratch.
Infrastructure as a Service (IaaS) -Basic hardware platform resources (CPUs, network, storage) are provided where customers create and deploy their own software running on top of these resources under their control; they manage the basic infrastructure but they do not manage applications or other software that runs on top of them (which would be SaaS). Some people consider this “on-demand” because you can get it instantly without installing anything beforehand; others consider this just renting time on someone else’s resources with no flexibility in how you use it.
In the simplest terms, IaaS is the most basic form of cloud computing. It’s a very cost effective way to get access to IT resources that you can use as you need them.
You can scale up or down your usage based on demand and there are no upfront costs or commitments required when signing up for an account with an IaaS provider (although some do charge additional fees).
In conclusion, cloud computing is an essential part of our lives. It has helped us in so many ways and continues to do so. We can use it for anything from storing documents or photos on the internet to getting expert advice on any topic imaginable through video calls with experts around the world!