Software as a Service – SaaS

Software as a Service – SaaS

Software as a Service (Saas)

The software as a service (Software as a Service — SaaS) is a concept to propose a subscription to a software rather than buying a license. With the development of Information technology and communication, more and more SaaS offerings are made through the web. There is then no need to install a desktop application or client-server. This concept emerged in the early 2000s, is a continuation of the service provider’s application (application service provider – ASP).

Software as a Service (SaaS) — Principle
SaaS is a delivery model solution in which the publisher / manufacturer provides means and where the service provider offers (usually as part of a recurring subscription) functionality integrated and managed to customers who use them. Customers do not pay for owning the software itself but rather to use it. They use it directly available via the interface or via API provided (often achieved through WebServices or REST (Representational State Transfer)).

The main current applications of this model are the manager of customer relationship management (CRM), video conferencing, human resources management, unified communications, collaboration, e-mail.

SaaS is the delivery of joint resources, services and expertise that enable companies to fully outsource some aspect of their information systems (messaging, security …) and equate to an operating cost rather as an investment. It is also, according to the service contracts offered the possibility to implement levels of service quality (SLA) and to limit their exposure to technology since the termination of the contract allows them to opt for a more technologically simply. SaaS can be seen as for “business” of service-oriented architecture (SOA).

Software as a Service (SaaS) — History
The term SaaS has replaced previous terms such as ASP (Application Service Provider) or “On Demand”. It appeared in 2000, promoted by companies such as Citrix.

The difference between SaaS and earlier models such as ASP is the fact that applications based on this model have been natively designed for the web. Previously, it was usually a front-end web application to traditional applications.

A study conducted by International Markess shows that areas such as collaborative solutions and business communications are now widely adopted SaaS. The examples of collaborative services most used by SaaS are sharing calendars online, conferencing tools remote management services contacts and presence, document management and / or content and messaging of undertaking. The adoption of these tools will significantly increase by 2010.

In 2007 the SaaS market was estimated at nearly 5 billion U.S. dollars worldwide and 122 million euros in France. Various studies considering that the market will double by 2011.

Software as a Service (SaaS) — Advantages and disadvantages
SaaS solutions are developed mainly to business destination. In recent years the market for SaaS is very strong growth. The SaaS for enterprises have various advantages and disadvantages.

Software as a Service (SaaS) — Benefits
The use of SaaS solutions company enables better load control techniques. All the technical solutions being relocated cost is fixed and is usually based on the number of people using the SaaS solution. Price per user including the cost of software licenses, maintenance and infrastructure, it is the regular cost of a SaaS solution is less than the acquisition of licenses and in-house deployment.

The benefits of SaaS have a fiscal impact and financial. If the total costs of acquisition and maintenance of the solution (TCO, total cost of ownership) data is lower, spending will increase in operating expenses (OPEX), unlike a traditional license purchase is usually spent in capital (CAPEX, excluding maintenance).

Another advantage for companies is speed of deployment. SaaS solutions are already pre-existing deployment time is extremely low. In the same vein, SaaS solutions are generally very flexible and can implement solutions for On-Demand.

Another advantage is to reduce power consumption by allowing the pooling of resources on servers shared by several businesses and the use of PCs or low-power Netbook-equipped systems exploitatoin-efficient resources such as Linux and d ‘ SIMPE a Web browser.

Software as a Service (SaaS) — Disadvantages
During the implementation of SaaS solutions, data on the client company are generally stored on the servers of the provider providing the solution. This relocation can lead to data privacy concerns.

The relocation of servers in the SaaS solution also enables mobile access to corporate data. This access causes a concern for information security at the departure of employees. It is essential to have in place procedures whereby, in a departure clearance to remove the former employee to access company data.

It is also important to adjust its plan Continuity of Activity for integrating SaaS and predict possible scenarios in case of problems with the provider of SaaS.

The migration technique may be complicated since data must switch to a platform provider to that of another, various problems associated with (compatibility, look for the client, etc.). For some, with SaaS, the customer may be linked to its supplier.

The same service requires the operation of two computers (client / provider) instead of one. This sometimes has the effect of doubling the power consumption, especially when using a client-intensive and non-shared server.

SaaS — Types of providers:
There are typically four types of ASP business:

  1. The ASP or functional specialist: Provides a single application, as the process of payment by credit card;
  2. The ASP Vertical: provides a solution as a package for a specific customer type such as dentists;
  3. The ASP Business: Provides a full spectrum of solutions;
  4. The ASP Local: provides services to SMEs in a limited geographical area.

Study: From Wikipedia, the free encyclopedia. The text is available under the Creative Commons.

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