Def 

Membership interfaces for user data access layer.

Marketing server model.

Services server model.

User data access layer with membership realisation

Interfaces for (Order/Money) Processing data access layer

Interfaces for categories data access layer

Service to allow the access to the menu functionality

Interfaces for auctions data access layer

Interfaces for conversation data access layer

Interfaces for data access layer to the attachment.

Category data access layer

Interfaces for work data access layer

Data access layer to store. In accordance to personal stores

Social Network server model.

Order/Money Processing data access layer

Data access layer to attachments

Conversation data access layer

Auctions data access layer

Data access layer to User.

Work data access layer