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CIS2200 CH-16

QuestionAnswer
Cloud computing IT services delivered over the internet (pay-per-use; replace owned hardware/software)
SaaS rent software online; vendor manages everything (no install; subscription model)
PaaS cloud platform to build & deploy your own apps (vendor handles OS + hardware; you build)
IaaS rent raw hardware/storage/networking in cloud (most client control of three cloud models )
private cloud cloud resources used exclusively by one organization (not shared with other customers)
hybrid cloud mix of internal + third-party cloud resources (shifts workloads between own +external)
cloudbursting overflow to cloud during demand spikes (scalability solution; activates as needed)
black swans unpredictable high-impact events (cloud scalability helps absorb their impact)
SLA contract specifying vendor performance guarantees (availability, uptime, service, commitments)
vertical niches products targeting a specific industry (SaaS makes niche markets economically viable)
server farm massive coordinated network of servers (backbone of cloud & SaaS infrastructure)
virtualization one machine function as many virtual machines (reduces hardware; enables private clouds)
containers virtualization with shared OS; faster & lighter (more efficient than full virtual machine)
service models SaaS/ Paas/ IaaS-- how much vendor manages (more letters= more vendor control)
shadow IT unauthorized apps used without IT approval (risk of easy SaaS adoption in organizations)
make/buy/rent decision custom-build vs. buy package vs. subscribe to SaaS (weighs: advantage, security, cost, time, skills)
public cloud all IT hosted by a third-party voucher (shared infrastructure; ;east control)
virtual desktops PC runs remotely; image delivered to device (easier to scale. secure & update than local PCs)
Created by: dallin.james
 

 



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