Cloud Computing Sagarmatha Engineering College Sanepa, Lalitpur, Nepal
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Cloud ComputingSagarmatha Engineering College Sanepa, Lalitpur, Nepal
What is …
▪ What is cloud?▪ What is computing?▪ What is cloud computing?
BEFORE that…
History
▪ 1980’s computer in houses▪ 1990’s Graphical user interface▪ 2000’s internet▪ From size of an hall to hand held devices▪ Standalone to network▪ Internet is source of information▪ Information communication changing and
shaping modern world
Cloud Computing
▪ Cloud has often been used as a metaphor for Internet in the network diagram
▪ Use of computing resources (hardware and software) which are delivered as a service over a network
▪ Distributed computing on internet Or delivery of computing service over the internet
▪ Example: Yahoo!, GMail, Hotmail instead of running an email program on your computer, you login to a web email account remotely
Cloud computing cont.…
▪ Cloud computing is an umbrella term used to refer to Internet based development and services
▪ Remotely hosted: Services or data are hosted on remote infrastructure / Off shore servers and location
▪ Ubiquitous: Services or data are available from anywhere.
▪ Commodified: The result is a utility computing model similar to traditional that of traditional utilities, like gas and electricity - you pay for what you would want!
▪ Not limited to borders and its extension can reach any part of the world with internet connectivity
Basic Cloud Characteristics
▪ NO-NEED-TO-KNOW
▪ FLEXIBILITY AND ELASTICITY
▪ PAY AS MUCH AS USED AND NEEDED
▪ ALWAYS ON!, ANYWHERE AND ANY PLACE
Do you Use the Cloud?
Service model of cloud computing
▪ Infrastructure as a service (IAAS)▪ Software as a service (SAAS)▪ Platform as a service (PAAS)
Infrastructure as a service (IAAS)
▪ a type of cloud computing in which a third-party provider hosts virtualized computing resources over the Internet
▪ a form of cloud computing that provides virtualized computing resources over the Internet
Software as a service (SAAS)
▪ Applications hosted by a provider on a cloud infrastructure are accessed from thin or thick clients over the network or a program interface
▪ a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet
Platform as a service (PAAS)
▪ Providers deliver not only infrastructure but also middleware (databases, messaging engines and so on) and solution stacks for application build, development and deploy
Security issues
Denial of service
Man-in-the-middle
Impersonation
Threats and attacks
Thank You!Queries and Suggestions????
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