IaaS vs. PaaS vs. SaaS - Differences, Examples and Diagram

IaaS, PaaS, and SaaS stand for Infrastructure-as-a-Service, Platform-as-a-Service, and Software-as-a-Service. Each describes a way of how you can use the cloud ... 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DownloadWhitePaper Shortcuts Introduction WhatarethedifferencesbetweenIaaS,PaaS,andSaaS? IaaSexamples PaaSexamples SaaSexamples IaaSvs.PaaS SaaSvs.PaaS IaaSvs.SaaS Infrastructure-as-a-Service(IaaS) WhentouseIaaS? IaaSdelivery IaaSbenefits IaaSdisadvantages Platform-as-a-Service(PaaS) WhentousePaaS? PaaSdelivery PaaSbenefits PaaSdisadvantages Software-as-a-Service(SaaS) WhentouseSaaS? SaaSdelivery SaaSbenefits SaaSdisadvantages IaaSvs.PaaSvs.SaaSmarketshare Conclusion   Introduction Withtheincreasedadoptionofcloudenvironments,moreandmorebusinessesaremovingawayfromon-premiseITsolutionsandhavecometorelyonITinfrastructures,platforms,andsoftwareofferedasaservice.Butwhatdoesthatlooklikeinpracticeandwhatarethedifferencesbetweenthevariousservicemodels? LearnallaboutIaaSvsPaaSvsSaaSandhowtheyhelpcreateacloud-computingenvironmentthatistailoredtoyourneeds.We’llalsotakealookatsomeexamples,soyouknowhowas-a-serviceoptionsintegrateintoyourcurrentITlandscapeandwhatbenefitsanddisadvantagestoexpect.   WhatarethedifferencesbetweenIaaS,PaaS,andSaaS? IaaS,PaaS,andSaaSstandforInfrastructure-as-a-Service,Platform-as-a-Service,andSoftware-as-a-Service.Eachdescribesawayofhowyoucanusethecloudforyourorganization.Theservicemodelsdon’tstandindirectoppositiontoeachotherbutcoveradegreeofITmanagement,thusofferinganalternativetoself-managedon-premiseITsolutions. WhiletraditionalsolutionsrequireyoutomanageyourownITinfrastructureandin-housesoftware,IaaSprovidesapay-as-you-goapproachforstorage,networking,andvirtualization.Inaddition,PaaSincludesevenmoreserviceslikehardwareandsoftwaredevelopmenttoolsavailableviatheweb.AndwithSaaS,yougetthehighestdegreeofvendormanagementby“renting”fullsoftwaresolutions. Thediagram“As-a-Service”belowillustratesthedifferencesbetweenIaaSvsPaaSvsSaaSandthelevelofvendormanagementthatyougetwitheachservicemodel.     IaaSexamples BelowaretencompaniesthatprovideIaaSplatformsforvariousbusinessneeds(someofthemalsoofferPaaSorSaaSmodels): AmazonWebServices(AWS) GoogleComputeEngine(GCE) IBMCloud MicrosoftAzure Rackspace Linode CiscoMetacloud DigitalOcean Vultr OracleCloud PaaSexamples BelowaretenpopularPaaSprovidersthatorganizationsusetobuildcustomizedappsfortheirbusinessneeds. GoogleAppEngine OpenShift Heroku Force.com WindowsAzure AWSElasticBeanstalk ApacheStratos MagentoCommerce AWSLamda SAPCloud SaaSexamples Software-as-a-Servicewasaroundevenbeforecompaniesstartedmigratingtothecloud.Bestexamplesareweb-basedemailserviceslikeOutlookorGmail.BelowareafewSaaSprovidersyou’llprobablybefamiliarwith. Salesforce CiscoWebEx Dropbox ZenDesk MailChimp Slack HubSpot DocuSign GoogleApps MicrosoftOffice365 IaaSvs.PaaS Infrastructure-as-a-Serviceoffersyouagreatdealofcontroloveryouroperatingsystems.Itisthefoundationofyourcloud-computingenvironment.WithPlatform-as-a-Serviceontheotherhand,youcanbuildappswithouthavingtohostthemon-premise,soyoubenefitfrommoreflexibilitybutgetalittlelesscontrol. Whichservicemodelisbestforyou,dependsonyourenterprise’sneeds.Forexample:Ifyouarelookingtobuildawebsite,anIaaSproductlikeAmazonWebsServicescanprovidetheinfrastructureforhostingthesiteanditsapplications.However,ifyouwanttoaddcustomfeatures,aPaaSproductlikeGoogleAppEnginedoesnotonlyhostyoursitebutalsoletsyourdevelopersdesignanddeploycustomapps.   SaaSvs.PaaS Asdescribedabove,Platform-as-a-Serviceisusedasawaytobuildnewproductsontopofyouralreadyexistingnetwork.ButSoftware-as-a-Servicetakesthisonestepfurther.SaaSproductsareentirelymanagedbythevendorandreadytousebyyourteams. SowhenshouldyouchooseaPaaSproductoveraSaaSproduct?Example:IfyouwanttocreateapayrollappthatistailoredtoyourHRneeds,Platform-as-a-Serviceprovidesallthetoolsyouwouldneedtosucceed.Onceyourproductisfinished,itcanbeconsideredSaaS.However,ifyoupreferout-of-the-boxeaseofuse,apayrollapplikeQuickbookswouldbethebetteroption.   IaaSvs.SaaS WithaSoftware-as-a-Serviceproduct,youaregettingthemostservicefromyourthird-partyproviderintermsofsoftwaremanagementandmaintenance.WithInfrastructure-as-a-Serviceontheotherhand,theprovideronlysuppliesandmaintainscorecomponentssuchasserversorstorage. Whichmodelisbestforyourbusinesshighlydependsonwhatyouaretryingtoachieve.Ifyouneedamaximumamountofcontrolwithinthecloudenvironmentandwanttoavoidexternalmanagementdataissuesthatcouldcompromisethefunctionalityorsecurityofyourdata,IaaSisthebestoption.However,ifyoudon’tneedmuchflexibilityandvalueeaseofuse,migratingtoasmall-scaleSaaSsolutionisthebetteridea. Scrolldowntolearnmoreabouteachone. WhitePaper HowtoEnableBusiness-LedITthroughSaaSManagement Enablingbusiness-ledITwithSaaSmanagementallowsthebusinesstomaximizethevalueofSaaSwhileminimizingtherisks. Downloadnow Report SaaSManagementSurvey2021 TopicsrangefromtheshareofSaaSinITlandscapes,howSaaSispurchased,SaaS-relatedchallengesfacingEAs,andhowSaaSismanagedandbywhichteams/departments. Getthereport WhitePaper TheSaaSManagementBuyer'sGuide EvaluatewhatmattersmostwithinaSaaSmanagementplatformandlearnaboutsuccesspracticestoboosttheROIofyourSaaSportfolio. Downloadnow eBook SaaSManagement-ThedefinitiveguideforITandfinanceleaders ThiseBookisacomprehensiveguidetoSaaSmanagementcontaininginspiringindustryvoices,practicaladvice,deepinsights,andsoundknowledgeonthiscriticalfieldofITmanagement. Downloadnow Seeallresources   Infrastructure-as-a-Service(IaaS) IaaSstandsforInfrastructure-as-a-Service.Itallowsorganizationstopurchaseresourceslikenetworkingandstorageon-demandinsteadofhavingtobuycostlyhardware.IaaSishighlyscalableandoffersbusinessesmoreflexibilitythanon-premisesolutions. IaaScanbeseenasthebasiclayerincloudcomputing.Thevirtualizedcomponentsavailablethroughtheinternetareequivalenttotheserversandhardwarecompanieswouldtraditionallystoreintheirbuilding. WhentouseIaaS? OrganizationsofallsizescanbenefitfromIaaS.Smallcompanieswhowanttoavoidpurchasinghardwareordon’thavethetime,staff,orabilitytohostlargedatacenterson-premise,aswellaslargerbusinesseswhowanttostayincontroloftheirappsandonlywanttoconsumetheresourcestheyactuallyneed.ThescalabilityofIaaSisalsogreatforcompaniesthatexperiencerapidgrowth. IaaSdelivery WithIaaS,enterprisesgetafullcloudcomputinginfrastructureincludingnetwork,servers,operatingsystem,anddatacenters/storage.FullaccessisgrantedthroughvirtualizationtechnologyviadashboardorAPI.Thisway,clientshavecompletecontrolovertheircomputinginfrastructure. TheIaaSproviderisresponsibleformanagingandmaintainingservers,harddrives,storage,andvirtualizationtools.However,applications,runtime,OS,middleware,anddatastillneedtobemanagedbytheclient. IaaSbenefits IaaSoffersmanybenefitstocompanieswhowanttomigratetothecloud.Themostcompellingonesarelistedbelow. Flexibility:IaaSismoreflexiblethanalltheothercloudcomputingmodels. Automation:WithIaaS,youcaneasilyautomatethedeploymentofservers,storage,andnetworking. Cost-reduction:IaaSletsyoupurchaseresourcesonanas-neededbasis,soyouonlypayforwhatyou’reactuallyusing. Control:IaaSletsyouretaincompletecontrolofyourinfrastructure. Scalability:Sinceyou’reonly“renting”ITcomponents,youcaneasilyupscaleordownscaleyourresources. IaaSdisadvantages IaaSalsohassomepotentialdrawbacksthatyoushouldbeawareofbeforesettlingonaprovider. Legacysystems:Beforemigratingtothecloud,legacyappsmighthavetobeenhancedforthenewtypeofinfrastructure. Internaltraining:StaffmighthavetoundergoadditionaltrainingtoeffectivelymanageandmonitorIaaS. Security:Whileyouareincontroloveryourapps,data,middleware,andtheOSplatform,youarealsoresponsibleformitigatingnewsecuritythreats.   Platform-as-a-Service(PaaS) PaaSstandsforPlatform-as-a-Service.Theplatformthatcanbeaccessedthroughtheinternetprovidesdeveloperswithaframeworkandtoolstobuildappsandsoftwarethataretailoredtotheorganization’sindividualneeds. PaaScanbeseenasascaled-downversionofIaaS.JustlikeIaaS,thecustomershaveaccesstoserversanddatacenterswhicharemaintainedandmanagedbythethird-partyprovider.However,theymainlyusePaaSforbuildingcustomSaaSapplications. WhentousePaaS? ThereareseveralsituationswhenaPlatform-as-a-Servicewouldbeagoodidea.Forexample,ifyouhaveseveraldevelopersworkingonthesamedevelopmentproject,PaaSisagreatwaytostreamlineworkflows. Youcanevenincludeothervendorsandstayflexibleduringtheentireprocess.PaaSisalsothewaytogoifyourorganizationrequirescustomizedapplicationsthatneedtobedevelopedanddeployedinashortamountoftime. PaaSdelivery PaaSdeliverycanbecomparedtothewaySaaSisdelivered.Theonlydifferenceisthatcustomersdon’taccessonlinesoftware,butanonlineplatformforthecreationofsoftware.Andsincetoolsandenvironmentareready-to-use,softwareengineersanddeveloperscanconcentrateonbuildingapplicationswithouthavingtoworryaboutothercomponentslikeoperationsystems,storage,andinfrastructure. PaaSbenefits BelowareafewofthebiggestbenefitsthatspeakforadoptingPaaSasacloudcomputingmodel. Cost-reduction:PaaSisasimple,cost-effectivewaytoquicklydevelopanddeploynewapps. Scalability:PaaSservicemodelscaneasilybeadjustedtoadeveloper’sneeds. Migration:WithPaaS,it’seasytomigratetoahybridcloudmodel. Lesscoding:Yourdeveloperteamshavetodoalotlesscodingthanbefore. Freedom:PaaSfreesuptimeasdeveloperscancustomizeappswithouthavingtomaintainthesoftware. PaaSdisadvantages Notsurprisingly,therearealsosomedrawbacksthatyouneedtobeawareofbeforesubscribingtoaPaaScloudcomputingmodel. Datasecurity:Usingthird-partyvendor-controlledserversmeansthattherearevarioussecurityriskstolookoutfor. Runtimeissues:SomePaaSsolutionsarenotoptimizedforthelanguageorframeworkthatyourdevelopmentteamsareusedto. Integrations:YoumightencountersomechallengeswithintegratingnewapplicationsasnoteverycomponentofyourlegacyITsystemisbuiltforthecloud. Limitations:CustomizedcloudoperationstendtohaveautomatedworkflowsthatmightnotbecompatiblewithPaaSsolutions,thuslimitingoperationalcapabilitiesforyourend-user.   Software-as-a-Service(SaaS) SaaSstandsforSoftware-as-a-Service.Theseentirecloudapplicationservicesarethemostcommonformofcloudcomputing.Theyareready-to-useandoftenrundirectlythroughtheclient’swebbrowser,meaningthereisnoneedforinstallationsordownloadslikeitwithon-premsolutions. SaaSishostedonremoteserversandfullymanaged,updated,andmaintainedbyathird-partyvendor.Thisresultsinlessresponsibilitybutalsolesscontrolfortheend-user. WhentouseSaaS? SaaSisidealforsmallcompaniesorstartupsthatdon’thavethecapacitytodeveloptheirownsoftwareapplications.Frome-commercetoshort-termprojects,SaaSisthequickestandeasiestsolutionifyoudon’tneedhighlycustomizedapplications.SaaSisalsoagreatoptionforapplicationsthatarenotusedveryoften,e.g.taxsoftware. SaaSdelivery SaaSisdeliveredasafullyfunctionalserviceandcanbeaccessedremotelyviaanywebbrowser,allowingclientstoworkfromanywhere.TheusersconnecttotheappthroughadashboardorAPIandrelyontheSaaSproviderwhenitcomestobugfixes,middleware,support,andanypotentialtechnicalissues. SaaSbenefits Software-as-a-Serviceprovidesseveraladvantagestobusinessesandtheirteams. Cost-reduction:SaaSusuallyresidesinasharedormulti-tenantenvironment.Whenmanagedcorrectly,thelicensecostsarelowercomparedtotraditionalmodels. Scalability:SaaSsolutionsareeasytoscaleupordownbasedonyourspecificneeds. Integration:ManySaaSsolutionshaveintegrationswithotherSaaSofferings,soyoudon’thavetobuyanotherserverorsoftware. Upgrades:WithSaaS,youinstantlybenefitfromnewsoftwarereleasesandupgrades. Easeofuse:Withoutinstallationordownload,SaaSiseasytouseandcomeswithbaked-inbestpractices. SaaSdisadvantages BeforeoptingforaSaaScloudcomputingmodel,youshouldalsobeawareofitspotentialdrawbacks. Datasecurity:Sincelargevolumesofsensitivedataarebeingexchangedwithoff-premiseservers,securityandcompliancemightbecompromised. Limitedcustomization:SaaSonlyallowsforminimalcustomizationwhenitcomestofeaturesandcapabilities. Interoperability:ItmightbedifficulttointegrateSaaSwithexistingappsandservicesduetodependencies. Lesscontrol:Usershaveverylittlecontroloverfunctionalities,performance,downtime,orhowtheirdataisgoverned. Wastedresources:WiththeeaseofuseandscalabilitySaaSprovides,anorganization'sSaaSstackincludesmanyoverlapping,underutilized,orunusedapps.ThevalueofSaaSappsintheorganizationcandropwithoutautomatedSaaSManagementorSaaSoptimizationprocessesinplace.   ShadowIT:EmployeesoftenpurchaseorsignupfornewSaaSwithouttheknowledgeofIT.UnmanagedSaaSappscouldhavepotentialsecuritygaps.   IaaSvs.PaaSvs.SaaSmarketshare Below,youcanseehowthepubliccloudcomputingmarketsharehasdevelopedoverthecourseofthreeyearsaswellasitsprojectionfor2022.TheleadingserviceinthecloudcomputingindustryisSaaSwitha39.4%cloudcomputingmarketsharein2021,followedbythefastest-growingcloudserviceIaaSwith20.9%,andPaaSwith18.7%. ThetrendshowsthatthereisaslightdecreaseinSaaS,andaslightincreaseinIaaSandPaaS,whichislikelytocontinueoverthenextyears.ThismaybeduetocompaniesacknowledgingIaaSforbeingmoreflexibleandcustomizablewhencomparedtoready-to-useSaaSsolutions.Nonetheless,thelatterwilllikelyremaindominantandstaythelargestcloudservicemodelintermsofcloudspend. Source:https://www.t4.ai/industry/cloud-computing-market-share Conclusion Asyoucantell,eachcloudcomputingmodelisappropriatefordifferentbusinessesandbusinessneeds.Andsinceeachmodelhasitsprosandcons,it’simportanttoknowwhatismorevaluabletoyouandyourcompany–control,customization,orconvenience.Andonceyou’vemadeadecision,youneedtofindtherightvendorthatgoeswithyourorganization’scultureandultimatelyhelpsincreaseyourteams’productivityandefficiency. NexttoIaaS,PaaS,andSaaS,therearealsootheremergingcloudcomputingmodelsthatmightbeofinteresttoyou:Monitoringas-a-service(MaaS),Functionas-a-service(FaaS),andCommunicationas-a-service(CaaS).Eachofthemistargetedatbusinesseswhoseekselectservicestoremaincompetitiveinacloud-firstmarket.   FreeWhitePaper DiscoverandManageYourSaaSEnvironment UncoverthevalueofyourSaaSsubscriptionsandmakeinformeddecisionsbasedonbestmanagementpractices. Previewthefirst7pages Previous Page:/ Next Fillouttheformtogetthefullversion AnswerstofrequentlyaskedquestionsonshadowIT WhatisIaaS? IaaSstandsforinfrastructure-as-a-service.Itallowsorganizationstopurchaseresourceslikenetworking and storageon-demand insteadofhavingtobuycostlyhardware. IaaS ishighlyscalableandoffersbusinessesmoreflexibilitythan on-premise solutions.   IaaS canbeseenasthebasiclayerincloudcomputing.Thevirtualizedcomponentsavailablethroughtheinternetareequivalenttotheserversandhardwarecompanieswouldtraditionallystoreintheirbuilding. WhatisPaaS? PaaS standsforplatform-as-a-service.Theplatformthatcanbeaccessedthroughtheinternetprovidesdeveloperswithaframeworkandtoolstobuildappsandsoftwarethataretailoredtotheorganization’sindividualneeds.   PaaS canbeseenasascaled-downversionof IaaS. Justlike IaaS,thecustomershaveaccesstoserversanddatacenterswhicharemaintainedandmanagedbythethird-partyprovider.However,theymainlyuse PaaS forbuildingcustom SaaS applications. WhatisSaaS? SaaS standsforsoftware-as-a-service. Theseentirecloudapplicationservicesarethemostcommonformofcloudcomputing.Theyareready-to-useandoftenrundirectlythroughtheclient’swebbrowser,meaningthereisnoneedforinstallationsordownloads.   SaaSishostedonremoteserversand fully managed,updated,andmaintainedbyathird-partyvendor.Thisresultsinlessresponsibilitybutalsolesscontrolfor the end user. WhatisthedifferencebetweenIaaS,PaaS,andSaaS? IaaS,PaaS,andSaaSstandforinfrastructure-as-a-service,platform-as-a-service,andsoftware-as-a-service.IaaSprovidesapay-as-you-goapproachforstorage,networking,andvirtualization.Inaddition,PaaSincludesevenmoreserviceslikehardwareandsoftwaredevelopmenttoolsavailableviaweb.AndwithSaaS,yougetthehighestdegreeofvendormanagementby“renting”fullsoftwaresolutions. IaaSvs.PaaS Infrastructureas-a-serviceoffersyouagreatdealofcontroloveryouroperatingsystems.Itisthefoundationofyourcloud-computingenvironment.Withplatform-as-a-serviceontheotherhand,youcanbuildappswithouthavingtohostthemon-premise,soyoubenefitfrommoreflexibilitybutgetalittlelesscontrol. SaaSvs.PaaS Platform-as-a-serviceisusedasawaytobuildnewproductsontopofyouralreadyexistingnetwork.ButSaaSproductsareentirelymanagedbythevendorandready-to-usebyyourteams. IaaSvs.SaaS Withasoftware-as-a-serviceproduct,youaregettingthemostservicefromyourthird-partyproviderintermsofsoftwaremanagementandmaintenance.Withinfrastructure-as-a-serviceontheotherhand,theprovideronlysuppliesandmaintainscorecomponentssuchasserversorstorage. FreeWhitePaper ManageSaaSPortfolio Downloadnow! RequestaDemo TakecontrolofyourSaaStoday! as