Advantages-of-Cloud-Computing.docx

AdvantagesofCloudComputingArunKumar1. AnIntroductiontoCloudComputing1 Bciorvtalkingabouttheadvantagesofcloudcomputing.Ict,slookatwhatcloudcomputingisanditsvarioustypes.Cloudcomputingoffersseveraladvantagesbyallowingyoutouseservicesthatincludeinfrastructure,applications,and/orstoragespaceforanominalfee.AstheseSCrViCCSarecreatedandofferedby(hecloudserviceprovider,youneednotpurchaseadditiomlinf11slruclureforuseatyourownpremises(servers,applicationprograms.OPCnningsystems,etc.).2 Onecandefinecloudcomputingasapay-per-usemodelforenablingon*denandaccess(oreliableandconfigurableresourcesthatcanbequicklypn>visioncdandrek<sedWithminimalconsumerinvolvementintermsofnunagc11cnt.Youpayonlyfortheresourcesyouuse.Youneedno<setuptheinfrastructureorbuythesoftware.Thisisjustanabstractionofthemanyadvantagesofcloudcomputing.3 Anycloudshouldhavethefollowingcharacteristicsirrespectiveofwhetheritisprivateorpublicandirrespectiveofthetypeofserviceitoffers:4 .Ilshouldbeabletoquicklyallotandrelieveresourceswheneverinquiredbyclients5 .Itshouldhavereal-timebackuptooffermaximumuptimetoclients6 .Itshouldbeabletoeaterto(heneedsOfclicntswithouthavingtoinvolveclientsintomanagene11oftheservice7 ,IcnextSCClitHitakesa100katadvantagesofcloudcomputingbystudyingthediflcrcnttypesofcloudsbasedonIhCservicetheyoffer.2. TypesofCloudServices5 SaaS2(SoftwareasaScnicc):Thisisthemostpopularformofcloudsen-ices.TheSCrViCCPlWideroffersasoftwa,etosupx)11theserviceonoffer.Thesoftwareisbuiltby(heserviceproviderwhile(heenduserscanconfigureitU>suitIhcirneeds.Theclients(endUseni)however,cannotchangeormodifythesoftware.Mozy3isanexampleofSaaS.ItisbasicallyabackupSerViCCthatOfrCrSasoftwaretohelppeoplebackuptheir(hta.Thus,youcanuse(hescr,iccwithoutactuallyhaving(ocodeorbuythesoftware.Youjusthavetopayan】Ofnhlyorannualfeetousetheservice.6 PaaS4(PlatfomiasaService):Offersaplatformtoclientsfordifferentpurposes.Forexample,(heWiixlowsAzure5offersaPlaIfOrm(oJevelopeis(obuild,tes,andhostapplicationsthatcanbeaccessedbytheendusen».Theendusersmay>rmaynotknowthattheapplicationishostedonthecloud.Asmentionedearlier,thestoragespaceforuserdatamaybeincreasedordecreasedpertherequirementofhcapplications.AswithIhCSaaS,youdonotneedtobuildtheplatform.Youjustpayanominalfeeforusingtheservice.7 laaS6(InfrastructureasaSen*ice):Offersinfrastncturcondemand.TheinfrastructurecanbeanythingtTonstorageserverstoapplicationstooperatingsystems.Office3657offersacombinationoftheseinfrasr>cureandfallsunderthiscategory.WithOffice365.youcangetplentyofapplicationsalongWiIhstoragespace.BuyingIntraslruclureorrentingiloutintraditionalmodelscanbeveryexpensive.WhenyouoptforIaaS.yousavealotonexpenses,space,andpersonnelrequiredtosetupandmaintaintheinfraMruc(urc.Thecloudserviceprovidertakescareofsettingupandmaintainingtheinfras11>ciure.Youjustpayafeetouseitperyourrequirements.8 Asyoucansee,therearcnumerousadvantagesofcloudcomputing,themostbasiconesbeingremoteaccessibility,lowercosts,andquickre-xovisions.3. GreenComputing9 Thissectiontalksaboutadvantagesofcloudcomputingundergreencompiling.Greencomputingcanbedefinedasenergyefficientusageofcomputingresources.MgofthecomputerstodayarcEnergyStarHcertilied.,I*hcyarcdesignedtoreducetheconsumptionofelectricitywhilealsoreducingemissionsthatdamage(heCnVinOnmCn1.Takingtheadvantagesofcloudcomputingfurtherco11ribuiescogreencomputing.IOAscloudcomputingcanalwaysbeusedtorc-provisioningofresources,whenyouneedtoexpand,youneednotbuy(heinfrasiructurc(oincreaseIhCcarbonemissionsbywayofusingInOreelec(riciiytocooloff(becomputerresources.Yocanjustexpandtothecloudouse(hepne-buillresourcestoslopIhCincreaseinelectricityusagealyourend.Youalsoneednotaddclingcomponentstherebyreducingthehazardousemissions.Thus,yousavetheenvironmentwhilealsosavingontheexpensesincurredduetoademandforexpansion.11 Theexpansioncanbeassmallaswritingacodeforyourbusiness.ThereareSeVenIlgenericsoftwareavailablethroughSaaS.Youcanusetheonethatsuitsyourcompanyorpersonalneeds.Thissavesyou(hetroubleofaddingoneormorecomputerstoyourinfrastructureforthepurposeofstoring(hedatabase(三)usedbyIhecode.Thiskeepsacheckonyourelectricityusage,(herebycontributingtogreencomputing.12 Cloudcomputingalsoallowsyoutoletyouremployeestelecommute.ThismeanslargesavingswhilecontributingIieavilytoenvironmentallyfriendlygn?encomputing.Youremployeescanaccessthecloudpublic>rp11va(e-fromanycomeroftheworldandcanworkfn>mtheirhomes.Thismeanstheyneednotdrivetothebusinesspremises.Thissavesthemfuelandreducescarbonemissions,whichinturn,savestheenvironment.Youcanalsocutdownthenumberofelectronicdeviceswhenyouremployeesavtelecommuting.Youuselesscomputersandothermachinery,whichmeansreducedusageofelectricity.Ifyouuselesscompulen>andservers,youalsocutdownonclingresources,whichreducebothelectricityusageandcarbonemissionsagaincontributingtoIhCenvironmentandgreencomputing.4. Conclusion13 Therearcseveralivancagcsofcloudcomputingasevidencedbytheabovediscussion.Here'sasummary:14 RemoteAccessibility:Withcloudcomputing,yourbusinessisnotrestrictedtoaparticularlocation.Thisapplies(oindividualsalso.Youcanaccesstheservicesfromanywhere.AllyouneedisyourIDandpassword.Insomecases,IheltmaybeextrasecurityrequirementsbutasIhey(aremobile,youcaneasilyaccessyourcloudservicesfromanyparioflheworld.15 EasyExpansion:Asofthecharacteristicsofcloudcomputingisksflexibility,youcanquicklyaccessn*reresourcesifyouneedoexpandyourbusiness.Youneedikhbuyextrainfras(ruc(ur.YoujustneedIoinformyourcloudproviderabulyourrequirementsandtheywillallocateresourcestoyou.Inmosteases,theentireprccssisautomatedsotheexpansiontakesjustafewminutes.TheSamCisapplicableifyouwishtouselessresource.Oneofthehcstadvantagesofcloudcomputingiseasyrexllocalionofresources.16 Security:,houghpeopledoubtcloudcomputing,cloudstendtobemoresecurethanthetraditionalbusinessmodels.Cloudsofferreal-timebackupwhichresultsinlessdataloss.Ineaseofoutage,yourCU$1OmerScanuse(hebackupSerVelSthatsyncWilhlhemainonesassoonastheyareup.YourbusinessgelsmaximumuplinewithoutanylossofdataduringtheIninsihvns.Otherthanthis,cloudsarclesspronetohacksandDdoS9attacksaspeopledon'tknowthewhereaboutsofyourdata.17 EnvironmentallyFriendly:Usageofready-maderesourcestailoredIoyourneedshelpsyoureducetheelectricityexpenses.Whileyousaveonelectricity,youalsosaveonresourcesrequired(ocooloffcomputersandothercomponents.Thisreducestheemissionsdangerous(oenvironment.WordsandNewExpressions1 Thistextistakenf11rom:/brighthub.2 SaaS:asoftwaredeliverymodelinwhichsoftwareanditsassociateddataarehostedcentrallyandaretypicallyaccessedbyusersusingathinclient,nomallyUSinKawebbrowserovertheInternet软件即服务模型(云计算三种模型之一)3 Mozy:anonlinebackupserviceforx*thWindowsandMaCusers,在线备份服务(网络硬盘)4 PaaS:thedeliveryofacomputingplatformandsolutionstackasaservice平台即服务模型(云计算三种模型之一)5 WindowsAzure:aMicrosoftcloudPlatforeusedtobuild,hostandscalewebaplicationsthroughMicrosoftdatacenters微软云计算的操作系统6 IaaS:aservicedeliverscoaputerinfrastructure-typicalIyaplatfoinvirtualizationenvironment-asaservice,alongwithrawstorageandnetworking基础架构即服务模型（云计算三种模型之一）7 Office365:co三mercialsoftwareplusservicesofferingasetofproductsfromMicrosoftCorporation,withtheinitialplanincludingaProfessionalsubscriptionandanEnterprisesubscription微软云办公软件8 EnergyStar:aninternationalstandardforenergyefficientconsumerproductsoriginatedinthe1.nitedStatesofAmerica节能认证的标记9 DDOS:adistributeddenialofserviceattackwhichoccurswhenmultiplesystemsfloodthebundwidlhorresourcesofatarRCtcdsystem,usuallyoneor三orewebservers分布式拒绝服务攻击