SAML, developed by the Security Services Technical Committee of the Organization for the Advancement of Structured Information Standards (OASIS), is an XML-based framework for communicating user authentication, entitlement, and attribute information. As its name suggests, SAML allows business entities to make assertions regarding the identity, attributes, and entitlements of a subject (an entity that is often a human user) to other entities, such as a partner company or another enterprise application.
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Information and documentation services available on the Internet through web servers are growing in an exponential manner. The logical evolution of the Internet over the last 10 years has been producing a replacement of static web pages and documents by dynamically generated documents. This is due both to user interaction with work processes and flows defined by service creators and to the availability of growing information repositories. This has meant a progressive evolution from a concept of web page publishing which was quite simple in its origins to more complex and differentiated schemes relying on procedures and techniques based on information management. The increasing complexity of services and systems supporting them has made it necessary to formulate a theoretical and practical corpus capable of combining classical information management techniques within organizations with the particular features of the digital environment.
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Information and communication technologies continue to pervade our lives in various aspects which include health, education, entertainment and ecommerce. People need to be able to trust computer systems as the dependence on them increases. The Trustworthy Computing vision (CRA, 2003) refers to computer systems that are intuitive, controllable, reliable and predictable and that ensure availability and security. Secure cod- ing is not trivial and poor code security management may leave the developed web application vulnerable to attack or turn the application into a launch pad for serious attacks.
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Serving multimedia content over the Internet with negligible delay remains a challenge. With the advent of Web 2.0, numerous video sharing sites using different storage and content delivery models have become popular. Yet, little is known about these models from a global perspective. Such an understanding is important for designing systems which can efficiently serve video content to users all over the world. In this paper, we analyze and compare the underlying distribution frameworks of three video sharing services – YouTube, Dailymotion and Metacafe – based on traces collected from measurements over a period of 23 days.
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Modern Geographical Information Systems (GIS) [1] provide a service-oriented architecture for interacting with geographical data sets and related maps. Web-based GIS systems are architected around the same principles as more general Web service systems based on SOAP [2], WSDL [3], and REST. Mirroring the World Wide Web Consortium and OASIS Web service standards-making bodies, the Open Geospatial Consortium [5] defines open standards for messages, XML data formats, and access protocols that are specific to the GIS community. In addition to OGC-based services, there are many companies (such as ESRI and AutoDesk) that provide proprietary, commercial solutions. Services from these various providers are not normally interoperable.
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Servers running Linux, Apache, MySQL and PHP - generally abbreviated as LAMP - are very popular nowadays. Such servers are increasingly easy to set up and keep running. Additionally the LAMP plattform has proben to be a stable platform available at low costs.

Web servers running a LAMP package can perform very well out of the box. But there are many ways to improve performance both through server configuration and application changes. This document gives you a good starting point for where to start and what to look at. It will also equip you with tools and processes to monitor the server’s performance.
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What on earth is Web 2.0? Web 2.0 carries a high profile and surrounding hype. Developers must surely be feeling the heat to quickly adopt the new second generation of dynamic, interactive and simple by design technologies.

Web 2.0 is the term pioneered by O’Reilly for new generation Web applications.Live.com, start.com, Google maps, Google Docs, YouTube, Flickr, and MySpace are few examples. Adaptation of this technology vector has changed the web application development approach and methodology significantly.AJAX (Asynchronous JavaScript), RIA(Rich Internet Applications) and Web Services form the core components of Web 2.0applications.
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Prior to 2001, web sites were relatively static, designed to push information to users in a manner that was not interactive. But proving that adversity can be the path to enlightenment, following the dot-com crash in late 2001 a new, stronger Web emerged. And unlike its predecessor, the new Web lived up to its name – sites became sticky hubs of interactive content, constantly changing and morphing based on the wants and needs of its visitors. Today, the technology that enables Web 2.0 is merely the vehicle, the transport mechanism from point A to point B. It is the user – those members of the particular web community – who ultimately drives the destination.
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