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What is cloud computing?
Basically you can either run your application development process on your own servers and hosted in your own environment, or use a cloud computing provider who manages the infrastructure for you and stores everything in the cloud. people can save their files and data and what not in the cloud rather than in their computers or devices but on servers hosted by third-party providers.
pretty much Cloud computing is the on-demand availability of computer system resources, especially data storage ( cloud storage) and computing power, without direct active management by the user. and then you determine basically how much you want to manage by the different services and who can access it. and can be accessed from anywhere.
what is IaaS?
the most basic cloud structure
A cloud provider manages the infrastructure, while you purchase, install, configure and manage your own software—operating systems, middleware and applications. so they take care of the infrastructure and you manage everything else.
what are some examples of IaaS
virtual machines, networking, load balancers firewalls
what is SaaS?
provides not only hardware infrastructure but also an operating system and application program as well. next higher level. Things like SQL Server or MS word and basically instead of installing them on your own server they are available for you to use within the cloud. so they provide you the software and you just do the configuration (creating tables, databases)
what is PaaS?
the is the next level up after IaaS. things like web apps. PaaS is designed to support the complete web application life cycle: service is used in developing, testing and maintaining of software. basically you upload the code and the cloud provider takes care of executing it.
what is a server?
a computer dedicated to providing one or more services to other computers or devices on a network
a server is like windows or linux. Servers are used to manage network resources.
what is serverless?
so there are servers but you don't have to manage them yourself you are using someone elses servers to run on. so its like PaaS but to the extreme. (by fully extracting the server. single function of code can be run and managed without even having to maintain a full application)
what impact does cloud have on businesses?
i think we really see it now working from home that it causes faster communication and data sharing etc. you can easily access data and business software from locations all over the world. It helps business focus on other important aspects of their business when they aren't spending so much time and money on all the hardware and set up and maintenance and all the staff it requires to do so.
what is FaaS?
functions as a service. basically its serverless compute- run code on demand. it enables you to execute code in response to events (triggers). can have timer based triggers. only pay when code is executed (millisecond)
what are the benefits of cloud computing?
With cloud computing, IT services are delivered via the Internet on-demand. Some benefits are faster application deployment, no need for upfront hardware costs, a flexible capacity for changing computing requirements, and the ability to add, or reduce, server space on-demand.
it saves costs bc you pay per use bc your not having to go out and buy a building and then buy computers and all the investment and TIME that goes into setting that up and monitoring etc. but with cloud and the pay per use model you pay for what you use and can turn it off when not needed and you can add another server within minutes of having the idea. not to mention security and disaster recovery. when your traditional hardware goes down you can lose a lot of data and it can be out for days under a non cloud model.elasticity. the ability of a system to automatically grown and to automatically shrink based on application demand so you can respond to a rapidly changing environment
If your laptop, tablet or smart phone crashes, you'll still have access to your files.
who are the different cloud vendors?
AWS, Azure, GCP, adobe, vmware, oracle, IBM, Rackspace... tons.
how secure is the cloud?
a lot more secure than saving files on your own hardware or computers. Basically servers are usually located in warehouses that most workers don't have access to. you can control who has access to what. theres a whole security center that continuously assesses vulnerabilities and you can set your own policies and it will provide recommendations if it finds anything wrong.
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