What is IaaS? - Red Hat

IaaS vs. PaaS vs. SaaS Featuredlinks Openhybridcloud Support Developers Partners Startatrial Skiptocontent Search Enteryourkeywords Enteryourkeywords Products Solutions Services&support Resources RedHat&opensource Featuredlinks Openhybridcloud Support Developers Partners Startatrial English Selectalanguage 简体中文EnglishFrançaisDeutschItaliano日本語한국어PortuguêsEspañol English LoginAccount LoginYourRedHataccountgivesyouaccesstoyourmemberprofileandpreferences,andthefollowingservicesbasedonyourcustomerstatus: CustomerPortal RedHatConnectforBusinessPartners Usermanagement CertificationCentral RegisternowNotregisteredyet?Hereareafewreasonswhyyoushouldbe:BrowseKnowledgebasearticles,managesupportcasesandsubscriptions,downloadupdates,andmorefromoneplace. Viewusersinyourorganization,andedittheiraccountinformation,preferences,andpermissions. ManageyourRedHatcertifications,viewexamhistory,anddownloadcertification-relatedlogosanddocuments. 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Logout Contactus Login/RegisterAccount Selectalanguage 简体中文EnglishFrançaisDeutschItaliano日本語한국어PortuguêsEspañol Jumptosection Jumptosection Infrastructure-as-a-service(IaaS),alsoknownascloudinfrastructureservices,isaformofcloudcomputinginwhichITinfrastructureisprovidedtoendusersthroughtheinternet.IaaSiscommonlyassociatedwithserverlesscomputing.GetexperttipsondevelopingacloudstrategyIaaSis1of3widelyrecognizedcloudservicemodels—alongsidePlatform-as-a-Service(PaaS)andSoftware-as-a-Service(SaaS)—thatgivesusersallthebenefitsofon-premisecomputingresourceswithouttheoverhead.IntheIaaSmodel,usershandletheapplications,data,operatingsystem,middleware,andruntimes.TheIaaSvendorprovidesthevirtualization,storage,network,andservers.Thisway,theuserdoesn’thavetohaveanon-premisedatacenteranddoesn’thavetoworryaboutphysicallyupdatingormaintainingthesecomponentsthemselves.Inmostcases,theIaaSuserhascompletecontroloftheinfrastructurethroughanapplicationprogramminginterface(API)ordashboard.Asthemostflexibleas-a-Servicecloudmodel,IaaSmakesiteasiertoscale,upgrade,andaddresources—likecloudstorage—insteadofhavingtoanticipatefutureneedsandpaycostsupfront.Thetermas-a-Servicegenerallymeansacloudcomputingservicethatismanagedforyousothatyoucanfocusonwhat’smoreimportant,likeyourcodeandrelationshipswithyourcustomers.InadditiontoIaaS,therearetwoothermajoras-a-Serviceoptions:PaaSandSaaS.WithPaaS,hardwareandanapplication-softwareplatformareprovidedandmanagedbyanoutsideserviceprovider,buttheuserhandlestheactualapplicationanddata.Primarilyfordevelopersandprogrammers,PaaSgivestheuseraplatformonwhichtodevelop,run,andmanagetheirownapplicationswithouthavingtobuildandmaintaintheinfrastructureusuallyassociatedwiththeprocess.CloudplatformsareatypeofPaaS,whichincludesservicesprovidedbyAlibabaCloud, MicrosoftAzure, GoogleCloud, AmazonWebServices(AWS),and IBMCloud.SaaSisaservicethatdeliversawebapplication,whichtheserviceprovidermanages,toitsuserstypicallythroughawebbrowser.Softwareupdates,bugfixes,andothergeneralsoftwaremaintenancearetakencareoffortheuser,andtheyconnecttotheappthroughadashboardorAPI.SaaSalsoeliminatestheneedtohaveanapplicationinstalledlocallyoneachindividualuser’scomputer,allowinggreatermethodsofgrouporteamaccesstothesoftwareasdesired.Flexibility:Purchaseonlythecomponentsyouneedforyourusecaseandscalethemupordownbasedonbusinessneeds.Affordability:LowoverheadandnomaintenancecostsmakeIaaSanaffordableoption.Payonlyforwhatyouuseandhowoftenyouuseit—similartopayingautilitybill.Control:Theuserhascontroloftheirinfrastructure.Security:Doestheproviderhaveatrustedreputationandtheresourcestopreventandmanageanysecuritythreats?Aretheredocumenteddisasterrecoveryprotocolsthatensurebusinesscontinuity?Multitenantsystems:AsIaaSproviderstendtoallocateinfrastructureresourcestomultipleclientsasneeded,theproviderisrequiredtomakesurethatcustomersareunabletoaccesseachothers’data.Havingmultiplecustomersusingaprovider’sinfrastructurecancreateanimbalanceknownasnoisyneighbor—whereasingleuser’smonopolyofaspecificresourcecanslowdownperformanceforothers—soprovidersneedtoplanresourceallocationcarefully.Thisiswhyit'simportanttounderstandhowtheproviderscaleswiththeirconsumerloads.Service:Whataretheserviceprovider’sservice-levelagreements(SLAs)—theminimumamountoftimeandefforttheproviderguaranteestosolveresourceprovisioningissues?Reliability:Performanceandspeedlargelydependontheprovider.Anysoftwareorhardwareproblemsontheirendwillimpactuserruntimes.RedHat’scloudinfrastructureproductsletyoubuildandmanageanIaaScloud.TheseincludeRedHatOpenStack®Platform,RedHatVirtualization,RedHatSatellite,RedHatCephStorage,andourcontainerorchestrationplatformRedHatOpenShift.Deliverservicesfaster,increaseyourITdepartment’svalue,reducetotalcostofownership,andimprovemanageability.Deploythecomponentshoweveryouwant,wheneveryouwant—andyoucanalwaysdependonRedHat’saward-winningsupport.Tosimplifybuyingandmanagingenterprisesoftware,RedHatMarketplaceoffersautomateddeploymentofcertifiedsoftwareonanyRedHatOpenShiftcluster.Learnhowtocreateascalable,flexiblecloudwithRedHatOpenStackReadthedatasheetandgetstartedwithIaaS Learnthefacetsofcloudmanagementandhowacloudmanagementplatformcanhelpyourenterprise.Managedservicesareawaytooffloadgeneraltaskstoanexpert,inordertoreducecosts,improveservicequality,orfreeinternalteamstodoworkthat’sspecifictoyourbusiness.Cloudservicesareinfrastructure,platforms,orsoftwarethatarehostedbythird-partyprovidersandmadeavailabletousersthroughtheinternet. ProductsAplatformthatvirtualizeshardwareandorganizesthoseresourcesintoclouds.Anenterprise-readyKubernetescontainerplatformwithfull-stackautomatedoperationstomanagehybridcloud,multicloud,andedgedeployments.Engagementswithourstrategicadviserswhotakeabig-pictureviewofyourorganization,analyzeyourchallenges,andhelpyouovercomethemwithcomprehensive,cost-effectivesolutions.RelatedarticlesUnderstandingcloudcomputingWhatiscloudautomation?Cloudvs.edge​What'sthedifferencebetweencloudand virtualization?IaaSvsPaaSvsSaaSUnderstandingenterpriseKubernetesTypesofcloudcomputingWhatarecloudserviceproviders?Whatarecloudservices?WhataremanagedITservices?WhatisCaaS?Whatiscloudarchitecture?Whatiscloudinfrastructure?Whatiscloudmanagement?Whatishybridcloud?WhatisIaaS?WhatisITinfrastructure?Whatismulticloud?Whatismultitenancy?WhatisPaaS?Whatisprivatecloud?Whatispubliccloud?WhatisSaaS?Whatistelcocloud?WhybuildaRedHatcloud?Understandingcloud-nativeapplicationsIntroductiontoKubernetespatternsStatefulvsstatelessVNFandCNF,what’sthedifference?Whatarecloudapplications?Whatisacontainerregistry?WhatareJavaframeworks?WhatisaJavaruntimeenvironment(JRE)?Whatisanapplicationarchitecture?Whatiscontainerization?WhatisFunction-as-a-Service(FaaS)?WhatisQuarkus?WhatisanSDK?Whatisserverless?Whatisservice-orientedarchitecture(SOA)?WhychooseRedHatforcloud-nativedevelopment?WhychoosetheRedHatbuildofQuarkus?Whatiscloudstorage?UnderstandingOpenStackWhatisdifferentaboutcloudsecurityWhatishybridcloudsecurity?ResourcesHybridcloudstrategyfordummiese-bookCloud-nativemeetshybridcloud:AstrategyguideE-BOOKBoosthybridcloudsecurityE-BOOK7characteristicsofsuccessfulhybridcloudstrategiesCHECKLISTBuildingahybridcloudstrategyDATASHEETRedHatOpenStackPlatform:OpensourcecloudinfrastructureE-BOOKBoostagilitywithhybridcloudandcontainerse-bookBRIEFEmbracingcontainersforsoftware-definedcloudinfrastructureTrainingRedHatOpenStackTechnicalOverview Getmorecontentlikethis Signupforourfreenewsletter,RedHatShares. 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