Certifications drive many markets to ensure safety.  While Linux offers a solid platform to build a product, it in general does not go through tests and validation to ensure certifcations needed in medical, mil/aero, or industrial markets.  MontaVista can assist customers to accomplish needed validation, testing, and documentation through it's Professional Services organization.  To find out more about certifying your product using Linux email sales@mvista.com or call +1-408-520-1591.