Definition
Cloudcomputingservicereferstotheunifiedmanagementandschedulingofalargenumberofnetwork-connectedcomputingresourcestoformacomputingresourcepooltoprovideuserswithon-demandservices.Userscanobtainrequiredresourcesandservicesthroughthenetworkinanon-demandandeasilyscalablemanner.
Mainfunction
Therearemanyconceptsthatarenotveryclearaboutcloudservices,andwewillfocusonthemhere.Intoday'ssociety,weusecomputerstoprocessdocuments,storedata,andshareinformationwithothersviae-mailorUSBflashdrives.Ifthecomputerharddrivefails,wewillbeatalossbecauseofthelossofdata.Intheeraof"cloudcomputing","cloud"willdostorageandcomputingworkforus.Atthattime,weonlyneedamobilephonewithInternetaccess.Onceneeded,wecanquicklyfindtheinformationweneedandprocessthemwiththemobilephoneatanyplace.Wenolongerhavetoworryaboutdataloss.
Someonemadeasimpledescription:itissmartenoughtopredictyourneedsinrealtimebasedonyourlocation,time,preferencesandotherinformation.Inthisbrand-newmodel,thesearchforinformationwillbedoneforyouinsteadofyou.Nomatterwhatdeviceyouuse,nomatterwhatkindofon-demandserviceyouneed,youwillgetaconsistentandcoherentultimateexperience.
Mainimpact
Businessmodel
ThebusinessmodelofcloudservicesistoprovideawealthofpersonalizedproductsbybreedingalargenumberofstartupcompaniestomeetthegrowingmarketIndividualneeds.Themethodofreproductionistoprovidestart-upcompanieswithacompletesetofservicessuchascapital,promotion,payment,logistics,andcustomerservice,andusetheirownoperatingcapabilitieslikewaterandelectricityforexternaluseondemand.
Bringingchanges
Amajorchangebroughtaboutbycloudservicesistheshiftfrombeingequipment-centrictoinformation-centric.Equipmentincludingapplicationsarejustpassingby(whoelsecanreadfloppydisksnow?),andinformationandpeople’sinvestmentininformationareassetsthatmustberetainedforalongtime(manypeoplechangetwophonesayear,Andoneofthemajorlossescausedbythelossofamobilephoneisthatthereisnobackupoftheaddressbook,photos,filesandotherinformation).Therefore,nomatterhownovelorevenexpensivefront-endhardwaredevicesasmentionedaboveare,theywillbecomeobsolete,andsomewillbecomeobsoleteanddepreciatequickly!Whatisnoteasilyobsoleteonthecloud?information!Notonlyisitoutofdate,alotofinformationmustbepreservedforalongtime,andthelongeritis,themorevaluableitbecomes.
Birthpremise
Thebirthpremiseofcloudservicesis:theInternetbreaksgeographicaldivisiontoformaunifiedbigmarket,anditbecomesprofitabletoprovideproductsforindividualneeds.Theobjectiveeffectis:tominimizethecostofentrepreneurship,entrepreneursonlyfocusonthecorelinkssuchascreativity,operationandmanagementwillnolongerbeimportant.Smallcompaniesbegantochallengelargecompaniesandsubverttheindustrialcivilizationof"scalewins".Oursocietyandculturewillbemoreindependentandfree.
Previousstate
Traditionalbusinessapplicationsarenotonlytoocomplex,butalsoexpensive.Thevarioussoftwareandhardwarerequiredfornormaloperationarealsostaggeringinquantityanddiverseinvariety.Youneedacompleteteamofexpertstoberesponsibleforinstallation,configuration,testing,operation,protectionandupdates.
Ifyouaredealingwithdozensorhundredsofapplications,theeffortrequiredwillincreaseexponentially,andthenyouwillunderstandwhyalarge-scalecompany,evenwiththebestThereasonwhytheITdepartmentisstillunabletoobtaintherequiredapplications.Thehopesofsmallandmedium-sizedcompaniesareevenslimmer.
Servicemethods
Cloudserviceprovidersbuildallnetworkinfrastructureandsoftwareandhardwareoperationplatformsneededforinformatizationforsmallandmedium-sizedenterprises,andareresponsibleforallearlyimplementationandlaterForaseriesofservicessuchasmaintenance,companiesdonotneedtopurchasesoftwareandhardware,buildcomputerrooms,andrecruitITpersonnel.Theyonlyneedtopayaone-timeprojectimplementationfeeandregularsoftwarerentalservicefeesinadvancetoenjoytheinformationsystemthroughtheInternet.
Serviceproviderscanensurethesecurityandconfidentialityofeachcompany’sdatathrougheffectivetechnicalmeasures.Theeffectofthecloudservicemodeladoptedbytheenterpriseisbasicallythesameasthatoftheself-builtinformationsystemoftheenterprise,butitsavesalotofmoneyforpurchasingITproducts,technologyandmaintenanceandoperation,anditcanbeusedlikewaterwithatap,anditisconvenienttouseinformatization.System,therebygreatlyreducingthethresholdandriskofinformatizationofsmallandmedium-sizedenterprises.
Technicalaspects
EnterprisesnolongerneedtobeequippedwithITprofessionalandtechnicalpersonnel,andatthesametime,theycangetthelatesttechnologyapplicationstomeettheirneedsforinformationmanagement.
Intermsofinvestment
Enterprisesonlyinvestinarelativelylow"monthlyfee",withoutaone-timeinvestment,anddonotoccupytoomuchworkingcapital,thusalleviatingthepressureofinsufficientfunds;Noneedtoconsidertheproblemofcostdepreciation,andcangetthelatesthardwareplatformandthebestsolutionintime.
Intermsofmaintenanceandmanagement
Becausetheenterpriseadoptsthemethodofrentingforlogisticsbusinessmanagement,itdoesnotneedspecializedmaintenanceandmanagementpersonnel,nordoesitneedtopayadditionalcostsformaintenanceandmanagementpersonnel.Toalargeextent,itrelievesthepressureonthehumanandfinancialresourcesoftheenterprise,sothatitcanconcentratethefundsforeffectiveoperationofthecorebusiness.
Servicefeatures
AccordingtothedefinitionoftheNationalInstituteofStandardsandTechnology,cloudcomputingservicesshouldhavethefollowingfeatures:
On-demandself-service.
Useanynetworkdevicetoaccessanytime,anywhere.
Multiplepeoplesharetheresourcepool.
Rapidredeploymentflexibility.
Servicesthatcanbemonitoredandmeasured.
Itisgenerallybelievedthattherearealsothefollowingcharacteristics:
Basedonvirtualizationtechnology,rapiddeploymentofresourcesoraccesstoservices.
Reducetheprocessingburdenontheuserterminal.
Reducetheuser'sdependenceonITexpertise.
Serviceform
Cloudcomputingcanbeconsideredtoincludethefollowinglevelsofservices:infrastructure-levelservices(IaaS),platform-levelservices(PaaS)andsoftware-levelservices(SaaS).Theso-calledlevelhereisthe"level"inthesenseofahierarchicalsystemarchitecture.IaaS,PaaS,andSaaSareimplementedattheinfrastructurelayer,softwareopenoperatingplatformlayer,andapplicationsoftwarelayerrespectively.
IaaS
IaaS(Infrastructure-as-a-Service):Infrastructureasaservice,consumerscanuseInternetObtainservicesfromacomprehensivecomputerinfrastructure.IaaSisabusinessmodelthatallocateshardwareresourcessuchasdatacentersandinfrastructuretousersthroughtheWeb.
PaaS
PaaS(Platform-as-a-Service):Platform-as-a-Service.PaaSactuallyreferstothesoftwaredevelopmentplatformasaservice,whichispresentedtousersinthemodeofSaaS.Therefore,PaaSisalsoanapplicationoftheSaaSmodel.However,theemergenceofPaaScanacceleratethedevelopmentofSaaS,especiallythedevelopmentofSaaSapplications.PaaSservicesenablesoftwaredeveloperstodevelopnewapplicationswithoutpurchasingaserverandotherequipmentenvironments.
SaaS
SaaS(Software-as-a-Service):Softwareasaservice.ItisamodeofprovidingsoftwarethroughtheInternet,usersdonotneedtobuysoftware,butrentthesoftwarebasedonWebfromtheprovidertomanagethebusinessactivitiesoftheenterprise.
TheSaaSmodelgreatlyreducesthecostofsoftware,especiallylarge-scalesoftware,andbecausethesoftwareishostedontheserveroftheserviceprovider,itreducesthecustomer’smanagementandmaintenancecostsandhashigherreliability.
Outsourcingmatters
Withtherapiddevelopmentofcloudtechnology,moreandmorecompaniestransferdatatothecloud,butthecloudserviceoutsourcingbusinessisnotasitseemsonthesurfaceSimple,evenifanenterpriseoutsourcescloudservicestoacloudserviceprovider,itisimpossibleto"getitrightonceandforall."Infact,herearesomeofthethingssummarized.
Managementissues:
Productoperationmanagement;
Prevention&propermaintenance;
Servicecontinuitymanagement;
Licensemanagement;
Applicationdevelopmentservices.
Selectionconditions
Threemajorconditionsforselectingcloudcomputingservices
Cloud-baseddatacentershavemultipleadvantagesandaregraduallybecomingenterpriseapplicationsAsageneraltrend,companieschoosingtoadoptacloud-baseddatacentershouldconsiderwhethertheserviceprovidermeetsthefollowingthreekeypoints.
Firstofall,cloud-baseddatacenterserviceprovidersmusthaveanexcellentcloudbackbonenetworktoensuresmoothandsafedatatransmission.Forexample,thefirst-linegroupcannotonlyprovideMPLSdedicatedlinenetworkservices,butalsoprovidecloud-baseddatacenterservicesatthesametime.Formanycross-regionalenterprises,inadditiontotheneedfordataservices,theyalsoneedtosolvetheproblemofcommunicatingwithbranchofficesaroundtheworld.Therefore,stablenetworkqualitymustbeakeyconsideration.
Secondly,whetherthecloudarchitecturedatacenterisflexibleenough,andwhetheruserscanchoosetodeploydifferentcloudresourcesatanytimetomeettheirownneeds.Takingthefinancialindustryasanexample,thedailystockmarkettradinghoursarethebusiest,andclouddatacenterssometimesneedtoimprovetheirperformanceinashortperiodoftimetomeetvariousunexpectedneeds.
Finally,thequestioniswhethertheserviceproviderprovidessimpleandeasy-to-usesoftwaresothatcorporatepersonnelcanstayintheofficeandcontrolalltheoperationsofthedatacenterbythemselves,justlikemanagingaphysicaldatacenter.
Networkrequirements
Enterprisesshouldbeabletoprotectspecificnetworksegmentsindifferentwaystomeettherequirementsofdataflowingthroughthenetwork.
Enterprisesshouldbeabletoprovidenetworkpriorityforspecificapplicationsanddatapassingthroughthenetwork.
Enterprisesshouldhaveapplication-awarenetworks.Privateclouds,publicclouds,andtraditionalsystemsusethenetworkindifferentways,dependingontheapplication,data,anduserinterface,howtheyinteractwitheachotherandhowtheyinteractwithcloudservers.
ServiceImplementation
Designinganend-to-endsecuritymeasureforcloudcomputingimplementationcanstartwiththedevelopmentofasecurestrategicplan.Theresultofthisstrategicplanistoformtheadministrativeandmanagementcontrolmeasuresneededtoprotecttheorganizationfinanciallyandlegally.
Theprotectionofcloudcomputinginfrastructurecanbeginbyprovidinggovernance,policiesand/orrules,policyenforcement,andcontrolmeasurestoensurehowinformationisprotected.Therearemanywaystodesignanddeliversuchastrategicplan.
Theprotectionofcloudcomputingcanstartwiththeestablishmentofmanagementcontrolmeasures:businessmodelandstrategy.Onceverified,thepurposeofthesecontrolmeasuresistoformmanagementcontrolmeasures:policies,procedures,standardsandguidelines.Thesecontrolmeasureswillformadevelopmentroadmapandtacticsforselectingandimplementingtechnicalcontrolmeasures,including:securitycontrolmeasuresandcompliancewithbusinessstrategies.Thisisamodelthatpromotesend-to-endsecurityforcloudcomputingprovidersandcustomers.
Developmentstatus
CloudcomputingservicescontinuetooccupytheITarena,makingtraditionalITgraduallyloseitsoriginalrelevance.Inordertokeepupwiththedevelopmentofcloudcomputingservicesandenableenterprisestomaintainstrongercompetitiveness,alargenumberofenterpriseshavebeguntotransformintothecloud.HerearefivetipstohelpcompaniessuccessfullytransformfromtraditionalITtoaprocess-drivenorganization.
Asmoreandmorecompaniesadoptcloudcomputingservices,andmoreandmoreservicevendorsestablishcloserelationships,somereliablecloudcomputingservicesinthepastcannolongermeettheirneeds.Theoldmodelwhodecidestousetheas-a-serviceproductlacksclearownership,sothatitisdifficulttocrossthetraditionalITtowerstructure.
Cloudcomputingserviceteamsneedtounderstandrelatedprocesses,nottechnology,suchasinfrastructureorapplications.Inprocess-drivenITorganizations,people’smainfocusisonbehaviorsthathavelong-termbenefitstotheorganization,Andclarifyjobresponsibilitiesandimproveefficiency.
Servicesupervision
1.Monitorwebandworkloadperformance.Thefirststepinensuringtheperformanceofaprivatecloudiscompliancewithstandards,whichrequiresconstantmonitoring.Fortunately,therearesomegridandapplicationperformancemonitoring(APM)toolsthatcanhelpwiththistime-consumingtask.
2.Controlworkloadspreadandresourceusage.Cloudsprawlorexcessiveprovisionofcloudserviceswillexhaustresourcesandcausehugeperformanceproblems—especiallyinthelongrun.
3.Designthecloudnetworkforflexibility,andbereadytoreturnatanytime.Aswitheverythingelse,asolidfoundationandplancanensurefuturesuccess.Whendesigningyourprivatecloudnetwork,makesureitispreparedtofacetheinevitablefailuresanddisasters.Redundancyisthekeytothisdesign.
4.Qualifiedcandidatepubliccloudvendors.Inresearchingpotentialcloudproviders,theworkofcloudadministratorshasneverstopped.Companiesshouldcontinuetoevaluatethecompatibilityofnewandexistingcloudvendorswiththeapplicationsintheirworkloads,justtopreventthingsfromhappeningandtopreventvendorreplacement.