Resource Oriented Architecture (ROA) is a 4th generation architecture for the web that defines resources, unique identifiers for resources, and relationships between resources. ROA provides a uniform interface for clients to access and interact with resources in a navigable, searchable, agile, reusable, and interoperable way. Implementing ROA allows information systems to be indexed and evolved easily on the web through the use of existing web standards like HTTP, HTML, XML, and more.

1. Resource Oriented Architecture (ROA)‏ 4th generation

2. Resource Resource Oriented Architecture Uniforme Interface Unique Identifier Multiple representations Links between representations and resources

3. ROA , the Resource Oriented Architecture is the architecture of the WEB

4. Rich Clients consume resources Resources “on the cloud"

5. Information system navigable by robot Navigable Indexable

6. Google like search and universal access John doe factures Ruby project meeting notes Search

7. Easy to extend New needs are easily answered adding - new representations - new URI Agility Evolutivity

8. Mash-up are build on top of resources Re-use Web of Data

9. Resources are naturally interoperable Relies on widespread existing standards: URI HTTP HTML, XML, gif, ... Mime Type Good HTTP client library and XML parser are available for every programming languages and development platform. Interoperability

10. An information system using resources and implementing the architecture of Web is: Navigable Search Agile Re-use Interoperable Indexable Evolutionary Openness

11. Restlet Netkernel JSR 311 Ruby On Rails IBM Project Zero Microsoft ADO.NET Data Services (ex-Astoria)‏ InfoQ REST & Web Architecture Aurélien Pelletier http://blogpro.toutantic.net Attribution Noncommercial Share Alike 2.0 France To go futher Graphics : - project Crystal for the icons - Stephane Halleux for the robot spider