Based on the concept of Communities of Practice (CoP), this study describes the design and implementation of an online academic conference, Pedagogy and Practice in Technology Enhanced Language Learning (PPTELL) 2021, as a backdrop for exploring how to effectively promote the development of academic citizenship within the PPTELL CoP. To address this, we propose a framework focusing on four interrelated and interdependent dimensions: ubiquitous technologies, social practice, knowledge building, and academic citizenship. The conference utilized Zoom, Second Life, Slido, and several social media apps for various sessions and activities. A triangulation design was employed to analyze data from a post-conference online survey and observation notes. Our findings highlighted the effectiveness of the design in fostering academic citizenship, supported by multiuser virtual worlds like Second Life that enabled social engagement and knowledge building. We also discuss potential solutions to the challenges encountered, taking into account the nature of academic and higher education environments today.