Usage-based pricing or Pay-as-You-Go is a relatively new SaaS business model that may provide customers the option to pay for only what they use. Yet, it is more challenging to implement than traditional Pay-before-Use subscriptions considering that it need not only realize financial payment on consumption-based behaviors, but also regulate the rights and obligations among the providers, consumers, and platforms in a legal form. To address these challenges, in this article Smart Legal Contract (SLC) is integrated into a service computing platform by introducing a new architecture, called Service as a Smart Contract (SaaSC). On the aspect of service legalization, through combining SaaS and SaaSC, we establish three kinds of terms in SLC-based software subscription contract to support service's registration, discovery and customization, so that a complete transaction procedure can be regulated in terms of service states, transaction process, and interactions among contracting parties. On the aspect of service financialization, we propose a new scheme of service interface declaration in the SLC-based SPESC contract. By automatically executing smart contracts and checking the terms, the pay-as-you-go billing form can be made fine-grained payment after using service interface calls. Moreover, we take weather forecast service as a case to implement and analyze the acquisition, delivery, and contractual payment of software service on Blockchain smart contract. The experimental results demonstrate the feasibility and effectiveness of the proposed SaaS+SaaSC architecture so that it provides a practicable approach for contractual software service.

Being one of the most vital production organs of the enterprise, workshop's agility determines the enterprise's overall agility in some ways. Faced with challenge of multiple product demands and dynamic production environment, production management in workshop needs to be more adaptive than ever before. With that consideration in mind, the paper introduces concept of cellular manufacturing and puts forward collaborative control architecture based on order adapting to manufacturing cell. The architecture has the characteristics of hierarchy, decentralization, collaborative control to improve autonomy, and flexibility for the manufacturing process. Architecture of a Web-based collaborative manufacturing management system is also put forward. Through application it proves that the software system can commendably support collaborative manufacturing management, rapid frame reconfiguration, functional extension and integration with other enterprise application for the adoption of relax-coupling architecture and component technology. Finally the MAS-based collaborative control oriented to cell for system extension is studied.