Software as a service (SaaS) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted.

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It is sometimes referred to as “on-demand software”, and was formerly referred to as “software plus services”.

SaaS applications are also known as Web-based software, on-demand software and hosted software.

The term “Software as a Service” (SaaS) is considered to be part of the nomenclature of cloud computing, along with;

  • Infrastructure as a Service (IaaS),
  • Platform as a Service (PaaS),
  • Desktop as a Service (DaaS),
  • Managed Software as a service (MSaaS),
  • Mobile Backend as a service (MBaaS)
  • Information Technology Management as a service (ITMaaS).

SaaS apps are typically accessed by users using a thin client, e.g. via a web browser.

SaaS is becoming a common delivery model for many business applications, including office software, messaging software, payroll processing software, DBMS software, management software, CAD software, development software, virtualization, accounting, customer relationship management (CRM), Management Information Systems (MIS), enterprise resource planning (ERP), human resource management (HRM), talent acquisition, content management (CM), and service desk management.

SaaS has been incorporated into the strategy of nearly all leading enterprise software companies.

Witsmind provides SaaS to both individual and organisational parties at relatively prices inform of IT Consultancy.

The expansion of the Internet during the 1990s brought about a new class of centralized computing, called Application Service Providers (ASP). ASPs provided businesses with the service of hosting and managing specialized business applications, with the goal of reducing costs through central administration and through the solution provider’s specialization in a particular business application. Two of the world’s pioneers and largest ASPs were USI, which was headquartered in the Washington, DC area, and Futurelink Corporation, headquartered in Irvine, California.

Software as a Service essentially extends the idea of the ASP model. The term Software as a Service (SaaS), however, is commonly used in more specific settings:

  • While most initial ASP’s focused on managing and hosting third-party independent software vendors’ software, as of 2012 SaaS vendors typically develop and manage their own software.
  • Whereas many initial ASPs offered more traditional client-server applications, which require installation of software on users’ personal computers, SaaS solutions of today rely predominantly on the Web and only requires a web browser to use.
  • Whereas the software architecture used by most initial ASPs mandated maintaining a separate instance of the application for each business, as of 2012 SaaS solutions normally utilize a multitenant architecture, in which the application serves multiple businesses and users, and partitions its data accordingly.

DbaaS (Database as a Service) has emerged as a sub-variety of SaaS, and is a type of cloud database.

Witsmind has its focus on cloud computing.


Witsmind Co. Ltd offers Software as a Service



Difference between Vertical and Horizontal SaaS

Vertical Saas is Software which answers the needs of a specific industry (e.g., software for the healthcare, agriculture, real estate, finance industries) while Horizontal Saas is the products which focus on a software category (marketing, sales, developer tools, HR) but are industry neutral.


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