A fully connected Internet business environment will introduce
a high level of dynamics to the business process.
It may result in very frequent changes in business decision,
and thus, information of various items may undergo
constant changes. In addition, there could be a flood of
similar shopping sites. In such a highly dynamic environment,
ordinary online customers may feel that online shopping
is not comfortable. Existing service models or systems
cannot effectively reflect such a dynamic environment
and support ordinary online customers. We propose a new
E-commerce service called the CIGMA. The CIGMA provides
catalog comparison and purchase mediation services
over multiple shopping sites for ordinary online customers.
The service is based on up-to-date information by reflecting
the frequent changes in catalog information in real-time.
It also matches the desire of the online customers for fast
response since the service is provided based on the data
cached in a high performance caching system. An important
and challenging issue in realizing the CIGMA service
is the design of merchant-side interface. This paper presents
the CIGMA along with its merchant-side interface including
service setup and deployment procedure.