OSA meaning in Computing ?

Open-source architecture is an emerging paradigm that advocates new procedures in imagination and formation of virtual and real spaces within a universal infrastructure. Drawing from references as diverse as open-source culture, modular design, avant-garde architectural, science fiction, language theory, and neuro-surgery, it adopts an inclusive approach as per spatial design towards a collaborative use of design and design tools by professionals and ordinary citizen users. The umbrella term citizen-centered design harnesses the notion of open-source architecture, which in itself involves the non-building architecture of computer networks, and goes beyond it to the movement that encompass the building design professions, as a whole.