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==Background==
==Background==
Prior to the introduction of SaaS in the market, consumers purchase the software they need in different stores wherein every consumer pays upfront a certain amount for a software to be able to use it. Every software needs maintenance, support and upgrade which requires additional costs not just for the consumer but for the manufacturers as well.
Prior to the introduction of SaaS in the market, consumers purchased the software they needed at a given store; however, all software needs maintenance, support and upgrades, which means additional costs for the consumer and the manufacturers as well.


In the late 1990s, Application Software Providers (ASPs) found a way to deliver software applications more efficiently and to reduce the costs of upgrades by introducing an alternative to software on premise, the SaaS model. However, the first introduction of the SaaS model is faced with challenges since the number of users are not too many to access new functionality. The deployment of client/server software is difficult and the maintenance, support and upgrade requirements were still expensive because the method of delivery is not done through the internet.<ref>[http://www.computerworld.com/pdfs/Service-Now-BriefhistoryofSaaS.pdf Brief History of SaaS]</ref>
In the late 1990s, Application Software Providers (ASPs) found a way to deliver software applications more efficiently and to reduce the costs of upgrades by introducing an alternative to software on premise, the SaaS model. However, the initial introduction of the SaaS model was faced with challenges given the number of users and that the deployment of client/server software is difficult and the maintenance, support and upgrade requirements were still expensive because the method of delivery was not done through the Internet.<ref>[http://www.computerworld.com/pdfs/Service-Now-BriefhistoryofSaaS.pdf Brief History of SaaS]</ref>


Over the years companies improved the SaaS model using modern applications particularly the internet technology. For instance, [[SaleForce.com]], SaaS applications are multi-tenant. Multiple customers are able to use one application set and database. The cost of infrastructure and maintenance using is lower using Multi-tenancy applications thus consumers pay lesser for their software application subscription fees.
Over the years, companies improved the SaaS model using modern applications, particularly Internet technology. Thus, multiple customers are able to use one application set and database. The cost of infrastructure and maintenance were lowered using multi-tenancy applications and consequently consumers paid less for their software application subscription fees.


Based on the study conducted by IDC on SaaS, the revenue for SaaS will increase five times faster compared to the revenue of traditional packaged software by 2014 at $40.5 billion. According to IDC vice president of SaaS and Cloud Services research Robert Mahowald, "The SaaS model is becoming mainstream and it is quickly dominating the planning from R&D, to sales quotas, to partnering, channels and distribution of all software and services vendors.<ref>[http://www.idc.com/getdoc.jsp?containerId=prUS22431810 IDC Press Release]</ref>
Based on a study conducted by IDC on SaaS, the revenue for SaaS will increase five times faster compared to the revenue of traditional packaged software by 2014, to around $40.5 billion. According to IDC vice president of SaaS and Cloud Services, researcher Robert Mahowald, "The SaaS model is becoming mainstream and it is quickly dominating the planning from R&D, to sales quotas, to partnering, channels and distribution of all software and services vendors".<ref>[http://www.idc.com/getdoc.jsp?containerId=prUS22431810 IDC Press Release]</ref>


==Delivery Models for SaaS==
==Delivery Models for SaaS==

Revision as of 18:39, 1 August 2011

SaaS (Software as a Service) is also referred to as the Application Service Provider (ASP) model by the International Data Corporation (IDC), or it is sometimes called "'on-demand software"'; it enables entities to access a complete business software functionality on a cloud based application.

The Software & Information Industry Association (SIIA) defines SaaS as an "application or service deployed in a centralized data center across a network such as the Internet, Inranet, LAN or VPN".[1] Users may be able to access the SaaS through subscription or by renting it from a vendor or service provider.

Background

Prior to the introduction of SaaS in the market, consumers purchased the software they needed at a given store; however, all software needs maintenance, support and upgrades, which means additional costs for the consumer and the manufacturers as well.

In the late 1990s, Application Software Providers (ASPs) found a way to deliver software applications more efficiently and to reduce the costs of upgrades by introducing an alternative to software on premise, the SaaS model. However, the initial introduction of the SaaS model was faced with challenges given the number of users and that the deployment of client/server software is difficult and the maintenance, support and upgrade requirements were still expensive because the method of delivery was not done through the Internet.[2]

Over the years, companies improved the SaaS model using modern applications, particularly Internet technology. Thus, multiple customers are able to use one application set and database. The cost of infrastructure and maintenance were lowered using multi-tenancy applications and consequently consumers paid less for their software application subscription fees.

Based on a study conducted by IDC on SaaS, the revenue for SaaS will increase five times faster compared to the revenue of traditional packaged software by 2014, to around $40.5 billion. According to IDC vice president of SaaS and Cloud Services, researcher Robert Mahowald, "The SaaS model is becoming mainstream and it is quickly dominating the planning from R&D, to sales quotas, to partnering, channels and distribution of all software and services vendors".[3]

Delivery Models for SaaS

SaaS are delivered in different ways such as:[4]

  1. Cloud Based SaaS Delivery Model- Vendors offer software service at a hosted ISV data center such as cloud computing platforms on a monthly subscription
  2. Hybrid SaaS Delivery Model- Software applications are hosted by SaaS vendors on a multi-tenanted application wherein a separate database is located in every tenant company. This delivery model is normally used by companies with database security or compliance issues with government regulations
  3. On-Premises SaaS Delivery Model-the software applications are oftentimes delivered by vendors to its the customers personal servers or through the appliances provided by the vendors which runs under a firewall.
  4. Platform as a Service (PaaS) based SaaS Delivery Model- software applications are delivered via platforms such as the as the Force.com offered by Salesforce.com

Benefits from SaaS Model

Users of SaaS enjoy the benefits of:[5] [6]

  • easier administration
  • automatic updates
  • patch management
  • software compatibility
  • easier collaboration
  • global accessibility
  • faster software modifications
  • cheaper and more affordable software services
  • improved competitive positions
  • access to the latest technology

SaaS Companies

Some of the popular SaaS companies include:[7]

References