What is the cloud? Flashcards
a concept. A technological Approach where computing resources are provisioned in a sharable way so that lots of users get what they need when they need it.
What is the cloud?
companies provide resources for each other using shared resources.
cloud
A core concept of how cloud computing technologies work. it allows the concept of a physical machine and a logical machine to be abstracted away from each other. a single physical machine called a host could run many individual virtual instances called guests.
Hardware virtualization
a physical machine that runs many individual virtual instances called guests
host
these employ a hypervisor
Hardware virtualization platforms
a piece of software that runs and manages virtual machines while also offering these guests a virtual operating platform that is indistinguishable from actual hardware
hypervisor
a single computer can act as the host for many independent virtual instances, run their own operating system, can be indistinguishable from the same operating systems on physical hardware
virtualization
a huge cluster of interconnected machines thatCan all function as hosts for lots of virtual guests. a system that lets you share resources among all of those instances
The cloud
A huge collection of interconnected servers that can host virtualized servers. These virtual instances running on this collection of servers can be given access to underlying ram as they need it. the company that runs the collection of servers can charge you to host virtual instances on your servers instead of you buying the four physical machines and it can cost much less than what you would spend on four physical servers.
cloud
what can I do instead of worrying about setting up my own backup solution?
use cloud server
what can I do if I need a load balancer?
use cloud server
what would happen if any underlying hardware broke
the cloud server moves the virtual instane to another machine without me even noticing
do I need to wait long to implement changes?
no. Just a few clicks.
a large cluster of machines run by a single large corporation and generally physically hosted on its own premises
Private cloud
a term used to describe situations where companies might run things like their most sensitive proprietary technologies on a private cloud while entrusting their less sensitive servers to a public cloud
hybrid cloud