It is preferable for business professionals to develop web applications which must be modified frequently based on their needs. A website for matching is a typical example because various matching websites for C2C (Consumer to Consumer) have recently been opened in relation to the "sharing economy". In our case studies on end-user development, web applications are developed using domain-specific application frameworks. Applicability of these domain-specific application frameworks has a tradeoff relation with programming granularity in which business logic is expressed. The template for the business logic definition based on three-tier architecture of user interfaces, business logic and databases improves the applicability. [For full proceedings, see ED571459.]