Dom Software Architecture Week 7

This chapter began by displaying ideas and a Web 2.0 reference architecture diagram. I will explain all components of the diagram.

The components of the digram:

Resource tier — This is the backend of the whole design. Sometimes referred to as the bottom tier the resources tier is where almost all the data and application support is held. This typically includes files; databases; enterprise resource planning (ERP) and customer relationship management (CRM) systems; directories; and other common applications an enterprise, site, or individual may have within its domain.

Service tier -The service tier connects to the resource tier and packages functionality so that it may be accessed as a service, giving the service provider control over what goes in and out.

Connectivity: is the means of reaching a service. For any service to be consumed, it must be visible to and accessible by the service consumer. The user must understand what the service does in terms of both business and technical consequences. Connectivity is largely handled using standards and protocols such as XML over HTTP, but other formats and protocols are also possible.