Architecture concept for web 2.0

Architecture has made design and building IT into a more consistent and manageable approach. I have recently study some architectural patterns and perhap it is a good idea for my record purpose to blog this web 2.0 pattern in for future reference.

Basically there 5 main component groups for web 2.0.

Design &
Devolopment   --> Client/App Tier
                                      |
        |                      Connectivity Tier
        |                              |
        |                      Service Tier
        |                             |
     [ Resource Tier               ]


Client/App Tier
This tier allow users to interface the services. It is where users interact with the web 2.0.
Component such VM,portals,media renditions, security controls maybe present in this tier.

Connectivity Tier
This tier support the standard connection protocols that support all the connectivity matter in the architecture. Most often the technology is define by community experts like W3C, OASIS, etc.(e.g like XML/HTTP)

Service Tier
This is where the resources is package and group as a service. This is also where BusinessRule(BR) and workflow is added.( e.g PHP, ASP, Rails, SOAP)

Resource Tier
This tier support the repository of data and support processing that is needed to create Rich Internet Application.(ERP,CRM,DB,MQ, LDAP,LegacySystem)

Design & Development
This architecture tier support the development of all the other 4 architectural components by providing standardization and control in the Integrated Development Environment(IDE) for example.