This research aims to investigate how external IT linkage, IT proactive stance, and analytical capabilities of IOS affect business process agility via the client's absorptive capacity; a structural equation modeling approach was adopted to evaluate the proposed model. The study's finding points to external effective Inter-organizational IT links that can drive the business processes modularization of airlines and enable them to create new business process performance by recombining business processes. Airlines and travel agencies can quickly and flexibly create new processes to respond to the dynamic market challenge through IT initiatives.