Working with text in the digital age brings several challenges for researchers from Computing, Education, and Linguistics, as collaborative writing on the Web. This article presents aspects related to thinking and doing within this context, working with humanistic issues related to Adorno (Criticism) and Piaget (Constructivism), the vision of paragraph as unit of text, and technologies for producing Web documents in collaborative learning environments (Oriented Architecture to Service in the Cloud). It is proposed, based on research related to collaborative writing on the Web, a model-driven service for collaborative construction documents in clouds. This paper also presents a tool (CCDC-TEO) that implements the proposed model and an example of its application. The results demonstrate the validity of this model.91120139