What is SaaS PaaS and IaaS With examples

Question

What do the following terms mean     SaaS PaaS IaaS    There are various cloud services available today  such as Amazon s EC2 and AWS  Apache Hadoop  Microsoft Azure and many others  Which category does each belong to and why

User · Answer

Iam sharing my experiences along with Standard definitions by NIST. Iam developer from product company and we own database and client (eco system). Beside many clear pictures the confusion arises because of many actors(5 defined by NIST) and things differ from prespectives.

For IaaS and Bare metal deployments we sell licenses and packages can be obtained from CD's or FTP server (rpms). The code is compiled tested and delivered. Here our customers pay to us (license cost) and/or to cloud provider for instances.

We partner with cloud providers (technology partner) to sell our products via marketplace.

Typically we deliver images (ami,vhd,etc) + some (cloud formation templates or ARM templates, etc) in case of PaaS. We have Jenkins pipelines to place them in market place (version based). Here with some skills developers can login into instances and manipulate the software (e.g after database instances are launched login and completely remove the software and make it look like just EC2 instances)

In case of SaaS our Jenkins pipelines will directly deploy (whether they are web apps, azure/lambda functions). Neither developers/end users have less control over the physical hardware.

Below are the Actors defined by NIST and since developers(tech company that provides software) partners with cloud provider, developers best match is cloud provider.

User · Answer

Meaning For dummies    IAAS  Infrastructure As A Service      The base layer  Deals with Virtual Machines  Storage  Hard Disks   Servers  Network  Load Balancers etc   PAAS   Platform As A Service       A layer on top of IAAS Runtimes  like java runtimes   Databases  like mySql  Oracle   Web Servers  tomcat etc    SAAS  Software As A Service      A layer on top on PAAS  Applications like email  Gmail  Yahoo mail etc   Social Networking sites  Facebook etc    To quickly relate consider the below Google s offerings   IAAS    Google Compute Engine  One can develop programs to be run on high performing google s computing infrastructure   PAAS    Google App Engine  One can develop applications and let them execute on top of Google app engine which take care of the execution   SAAS    Gmail  Google  etc  One can use email services and extend email google  based applications to form newer applications      Popularity   Company Wise Popularity  Cloud computing is dominated by    Amazon Web Services  AWS     Google Compute Engine   Google App Engine Microsoft Azure There are many small and medium scale cloud operators that include IBM  Oracle etc    Most of the popularity around these services owe to the reputation of the company and the amount of investments being made by these companies around the cloud space   Type of Service Wise Popularity   PAAS  Platform as a Service  is more popular among developers as they can put all their concentration on developing their apps and leave the rest of management and execution to the service provider  Many service providers also offer the flexibility to increase decrease the CPU power depending upon the traffic loads giving developers cost effective and easy  amp  effortless management  SAAS  Software as a service  is more popular among with consumers  who bother about using the application such as email  social networking etc IAAS  Infrastructure as a service  is more popular among users into research and high computing areas

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Difference between IaaS PaaS  amp  SaaS  In the following tabular format we will be explaining the difference in context of     pizza as a service

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Adding to that  I have used AWS  heroku and currently using Jelastic and found -  Jelastic offers a Java and PHP cloud hosting platform  Jelastic automatically scales Java and PHP applications and allocates server resources  thus delivering true next-generation Java and PHP cloud computing  http   blog jelastic com 2013 04 16 elastic-beanstalk-vs-jelastic  or  http   cloud dzone com articles jelastic-vs-heroku-1  Personally I found -   Jelastic is faster You don   t need to code to any jelastic APIs     just upload your application and select your stack  You can also mix and match software stacks at will    Try any of them and explore yourself  Its fun  -

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There are three major types of cloud services  IaaS  PaaS  and SaaS  You   ve probably seen these abbreviations on the websites of cloud providers  Before going into details  let   s compare IaaS  PaaS  and SaaS to transportation      On-premises IT infrastructure is like owning a car  When you buy a car  you   re responsible for its maintenance  and upgrading means buying a new car  IaaS is like leasing a car  When you lease a car  you choose the car you want and drive it wherever you wish  but the car isn   t yours  Want an upgrade  Just lease a different car  PaaS is like taking a taxi  You don   t drive a taxi yourself  but simply tell the driver where you need to go and relax in the back seat  SaaS is like going by bus  Buses have assigned routes  and you share the ride with other passengers    Reference  https   rubygarage org blog iaas-vs-paas-vs-saas

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IaaS  PaaS and SaaS are basically cloud computing segment    IaaS  Infrastructure as a Service  - Infrastructure as a Service is a provision model of cloud computing in which an organization outsources the equipment used to support operations  including storage  hardware  servers and networking components  The service provider owns the equipment and is responsible for housing  running and maintaining it  The client typically pays on a per-use basis  Ex- Amazon Web Services  BlueLock  Cloudscaling and Datapipe    PaaS  Platform as a Service  - Platform as a Service is one of the GROWING sector of cloud computing  PaaS basically help developer to speed the development of app  saving money and most important innovating their applications and business instead of setting up configurations and managing things like servers and databases  In one line I can say Platform as a service  PaaS  automates the configuration  deployment and ongoing management of applications in the cloud  Ex  Heroku  EngineYard  App42 PaaS and OpenShift  SaaS  Software as a Service  - Software as a Service  SaaS is a software delivery method that provides access to software and its functions remotely as a Web-based service  Ex  Abiquo s and Akamai

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SaaS  Software as a Service Cloud application services or    Software as a Service     SaaS  are probably the most popular form of cloud computing and are easy to use  SaaS uses the Web to deliver applications that are managed by a third-party vendor and whose interface is accessed on the clients    side  Most SaaS applications can be run directly from a Web browser  without any downloads or installations required  SaaS eliminates the need to install and run applications on individual computers  With SaaS  it   s easy for enterprises to streamline their maintenance and support  because everything can be managed by vendors  applications  runtime  data  middleware  O S  virtualization  servers  storage  and networking  Gmail is one famous example of an SaaS mail provider   PaaS  Platform as a Service The most complex of the three  cloud platform services or    Platform as a Service     PaaS  deliver computational resources through a platform  What developers gain with PaaS is a framework they can build upon to develop or customize applications  PaaS makes the development  testing  and deployment of applications quick  simple  and cost-effective  eliminating the need to buy the underlying layers of hardware and software  One comparison between SaaS vs  PaaS has to do with what aspects must be managed by users  rather than providers  With PaaS  vendors still manage runtime  middleware  O S  virtualization  servers  storage  and networking  but users manage applications and data   IaaS  Infrastructure as a Service Cloud infrastructure services  known as    Infrastructure as a Service     IaaS   deliver computer infrastructure  such as a platform virtualization environment   storage  and networking  Instead of having to purchase software  servers  or network equipment  users can buy these as a fully outsourced service that is usually billed according to the amount of resources consumed  Basically  in exchange for a rental fee  a third party allows you to install a virtual server on their IT infrastructure  Compared to SaaS and PaaS  IaaS users are responsible for managing more  applications  data  runtime  middleware  and O S  Vendors still manage virtualization  servers  hard drives  storage  and networking  What users gain with IaaS is infrastructure on top of which they can install any required platforms  Users are responsible for updating these if new versions are released

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IaaS  PaaS and SaaS are cloud computing service models     IaaS  Infrastructure as a Service   as the name suggests  provides you the computing infrastructure  physical or  quite often  virtual machines and other resources like virtual-machine disk image library  block and file-based storage  firewalls  load balancers  IP addresses  virtual local area networks etc    Examples  Amazon EC2  Windows Azure  Rackspace  Google Compute Engine  PaaS  Platform as a Service   as the name suggests  provides you computing platforms which typically includes operating system  programming language execution environment  database  web server etc    Examples  AWS Elastic Beanstalk  Windows Azure  Heroku  Force com  Google App Engine  Apache Stratos  While in SaaS  Software as a Service  model you are provided with access to application software often referred to as  on-demand software   You don t have to worry about the installation  setup and running of the application  Service provider will do that for you  You just have to pay and use it through some client    Examples  Google Apps  Microsoft Office 365    Few additional points regarding your question     AWS  Amazon web services  is a complete suite which involves a whole bunch of useful web services  Most popular are EC2 and S3 and they belong to IaaS service model  Although Hadoop is based on previous works by Google GFS and MapReduce   it is not from Google  It is an Apache project  You can find more here  It is just a distributed computing platform and does not fall into any of these service models  IMHO  Microsoft s Windows Azure is again an example of IaaS    As far as popularity of these services is concerned  they all are popular  It s just that which one fits into your requirements better  For example  if you want to have a Hadoop cluster on which you would run MapReduce jobs  you will find EC2 a perfect fit  which is IaaS  On the other hand if you have some application  written in some language  and you want to deploy it over the cloud  you would choose something like Heroku  which is an example of PaaS

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There are three major categories of cloud service models     Software as a service  SaaS    Platform as a service  PaaS   Infrastructure as a service  IaaS    Software as a service  SaaS    SaaS is a software that is centrally hosted and managed for the end customer  It s usually based on a multi-tenant architecture  a single version of the application is used for all customers  and typically is licensed through a monthly or annual subscription   Example Office 365  Dropbox  Dynamics CRM Online are perfect examples of SaaS software  subscribers pay a monthly or annual subscription fee  and they get Exchange as a Service  online and or desktop Outlook  or Storage as a Service  OneDrive and Dropbox    Platform as a service  PaaS    With PaaS  you deploy your application into an application-hosting environment  designed for building  testing  and deploying software applications  provided by the cloud service vendor  Developers have multiple ways to deploy their applications without knowing anything about what s happening in the background to supporting it   Example Web Apps feature in Azure App Service and Azure Cloud Services  web and worker roles  are an example of PaaS   Infrastructure as a service  IaaS   An IaaS cloud vendor runs and manages server farms running virtualization software  enabling you to create VMs  running Windows or Linux  that run on the vendor   s infrastructure and install anything you want on it  Developers don   t have control over the hardware or virtualization software  but they have control over almost everything else  In fact  unlike PaaS  you are completely responsible for it     References  Book  Architecting the Cloud  Design Decisions for Cloud Computing Service Models  SaaS  PaaS  and IaaS

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Following link gives very good explanation on SaaS  PaaS and Iaas   http   opensourceforgeeks blogspot in 2015 01 difference-between-saas-paas-and-iaas html   Just some brief     IaaS  here vendor provides infra to user where an user gets hardware virtualization infra  storage and Networking infra   PaaS  here vendor provides platform to user where an user gets all required things for their work like OS  Database  Execution Environment along with IaaS provided environment  So pass is platform   IaaS   SaaS seems to be quite wide area where vendor provides almost everything from infra to platform to software  So SaaS is Iaas PaaS along with different softwares like ms office  virtual box etc

User · Answer

When you are a simple client who wants to make use of a software but you have nothing in hand then you use SaaS   When you have a software developed by you  but you want to deploy and run on a publicly available platform then you use PaaS   When you have the software and the platform ready but you want the hardware to run then you use IaaS

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I know this question has been answered a while ago but this could help   What do the following terms mean  SaaS  Software as a Service - Essentially  any application that runs with its contents from the cloud is referred to as Software as a Service  As long as you do not own it  Some examples are Gmail  Netflix  OneDrive etc  AUDIENCE  End users  everybody  IaaS  Infrastructure as a Service means that the provider allows a portion of their computing power to its customers  It is purchased by the potency of the computing power and they are bundled in Virtual Machines  A company like Google Cloud platform  AWS  Alibaba Cloud can be referred to as IaaS providers because they sell processing powers  servers  storage  networking  to their users in terms of Virtual Machines  AUDIENCE  IT professionals  System Admins  PaaS  Platform as a Service is more like the middle-man between IaaS and SaaS  Instead of a customer having to deal with the nitty-gritty of servers  networks and storage  everything is readily available by the PaaS providers  Essentially a development environment is initialized to make building applications easier  Examples would be Heroku   AWS Elastic Beanstalk  Google App Engine etc AUDIENCE  Software developers   There are various cloud services available today  such as Amazon s EC2 and AWS  Apache Hadoop  Microsoft Azure and many others  Which category does each belong to and why   Amazon EC2 and AWS - is an Infrastructure as a Service because you ll need System Administrators to manage the working process of your operating system  There is no abstraction to build a fully featured app ordinarily  Microsoft Azure would also fall under this category following the aforementioned guidelines  I really haven t used Apache Hadoop  so I really cannot say

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IaaS  Infra as a Service   IaaS provides the infrastructure such as virtual machines and other resources like virtual-machine disk image library  block and file-based storage  firewalls  load balancers  IP addresses  virtual local area networks etc  Infrastructure as service or IaaS is the basic layer in cloud computing model   Common examples  DigitalOcean  Linode  Rackspace  Amazon Web Services  AWS   Cisco Metapod  Microsoft Azure  Google Compute Engine  GCE  are some popular examples of Iaas   PaaS  Platform as a Service   PaaS or platform as a service model provides you computing platforms which typically includes an operating system  programming language execution environment  database  web server  technically It is a layer on top of IaaS as the second thing you demand after Infrastructure is a platform   Common examples  AWS Elastic Beanstalk  Windows Azure  Heroku  Force com  Google App Engine  Apache Stratos   SaaS  Software as a Service   In a SaaS  you are provided access to application services installed at a server  You don   t have to worry about installation  maintenance or coding of that software  You can access and operate the software with just your browser  You don   t have to download or install any kind of setup or OS  the software is just available for you to access and operate  The software maintenance or setup or help will be provided by SaaS provider company and you will only have to pay for your usage   Common examples  Google Apps  Microsoft office365  Google docs  Gmail  WHMCS billing software  Basic difference between IaaS  PaaS  amp  SaaS

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Here is another take with AWS Example of each service   IaaS  Infrastructure as a Service   You get the whole infrastructure with hardware  You chose the type of OS that needs to be installed  You will have to install the necessary software   AWS Example  EC2 which has only the hardware and you select the base OS to be installed  If you want to install Hadoop on that you have to do it yourself  it s just the base infrastructure AWS has provided   PaaS  Platform as a Service   Provides you the infrastructure with OS and necessary base software  You will have to run your scripts to get the desired output    AWS Example  EMR Which has the hardware  EC2    Base OS   Hadoop software already installed  You will have to run hive spark scripts to query tables and get results  You will need to invoke the instance and wait for 10 min for the setup to be ready  You have to take care of how many clusters you need based on the jobs you are running  but not worry about the cluster configuration   SaaS  Software as a Service   You don t have to worry about Hardware or even Software  Everything will be installed and available for you to use instantly   AWS Example  Athena  which is just a UI for you to query tables in S3  with metadata stored in Glu   Just open the browser login to AWS and start running your queries  no worry about RAM Storage CPU number of clusters  everything the cloud takes care of

[cloud] What is SaaS, PaaS and IaaS? With examples

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