This study will test the hypothesis that using mobile phone reminder messages and web-based monitoring, as part of a structured care plan, will improve clinical outcomes; namely reduction in the rate of exacerbation, in patients with asthma. We also aim to explore the cost-effectiveness of this technology. Our research group proposes to complete a feasibility study, with an interim analysis for a formal power calculation and then acquire ethics to report these results and study design with anticipated publication prior to proceeding with a full randomized controlled trial to assess the efficacy of this intervention. We predict that using a combination of Internet and SMS messaging technology will empower patients to manage their asthma and eventually prevent asthma exacerbation based on their personalized action plan as well as a SMS application. We plan to compare the web-based/SMS reminder method with written action plan approach in a 24-month time frame, as explained later in this proposal.