Cloud Computing
Cloud-computing services cover a vast range of options now, from the basics of storage, networking and processing power, through to natural language processing and artificial intelligence as well as standard office applications – even quantum computing.
Cloud Computing
A fundamental concept behind cloud computing is that the location of the service, and many of the details such as the hardware or operating system on which it is running, are largely irrelevant to the user. It's with this in mind that the metaphor of the cloud was borrowed from old telecoms network schematics, in which the public telephone network (and later the internet) was often represented as a cloud to denote that the location didn't matter – it was just a cloud of stuff. This is an over-simplification of course; for many customers, location of their services and data remains a key issue.
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. However, there are potential downsides to cloud computing, in that it can also introduce new costs and new risks for companies using it.
Elelements of Cloud Computing
INFRASTRUCTURE AS A SERVICE (IAAS)
Infrastructure as a Service (IaaS) is attractive to companies that want to build applications from the very ground up and want to control nearly all the elements themselves, but it does require firms to have the technical skills to be able to orchestrate services at that level.
PLATFORM AS A SERVICE (PAAS)
Platform as a Service (PaaS) is the next layer up includes the tools and software that developers need to build applications on top, which could include middleware, database management, operating systems, and development tools.
SOFTWARE AS A SERVICE (SAAS)
Software as a Service (SaaS) is the delivery of applications as a service, that most people are used to on a day-to-day basis. The underlying hardware and operating system is irrelevant to the end user, who will access the service via a web browser or app.
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