This research aims to discover the connection between strategic typologies and organisational critical activities, and focuses on the organisational critical activities in three functional areas in high-tech organisations: ‘research and development’, ‘marketing’ and ‘manufacturing’. Research methods used include semi-structured interviews with 11 firms and 15 interviewees. And 34 participants were surveyed with analytic hierarchy process (AHP) questionnaires in Taiwan. The results show that organisations adopt different typologies tend to perform organisational critical activities differently to achieve success. Prospectors place more emphasis on ‘research and development’ related activities, Defenders focus on activities of ‘manufacturing and production related fields’, and Analysers care more about activities in ‘marketing related fields’. Defenders tend to pay more attention to activities relating to the manufacturing domain than Prospectors and Analysers. This research establishes a linkage between organisational critical activities and corporate strategy, and it could be useful for high-tech organisations to better manage their strategies.