Model Driven Engineering (MDE) is often applied to support software engineering processes (i.e., from reverse to forward engineering, including maintenance and/or evolution tasks). However, as promoted by the Model Driven Organization (MDO) initiative, it can also be relevant in more business-oriented and strategic decision-making activities such as Enterprise Architecture (EA). EA is the process of translating business vision and strategy into effective change by better describing the enterprise's future state and thus enable its evolution. Even if several approaches have already proposed different kinds of support to deal with the company's EA, an integrated MDE framework combining EA data federation, EA standard adaptation and multiple viewpoint support is still missing. This paper reports on our ongoing experience of building the TEAP MDE framework (based on the TOGAF standard and SmartEA tooling) notably addressing these three challenges in an industrial EA context.