This chapter considers some of the aspects of incorporating external components into a system that will be subject to certification. Depending on the particular standard and safety level, many pieces of evidence will be required before the integrated device can be certified. The conditions of the certification will place an obligation on the component supplier to keep the integrator informed of any bugs that are discovered in the component that could potentially affect safe operation. Beta component incorporated (BCI) must decide whether to use an external certification body to issue the certificate for its Operating System, or to use its own, internal, resources. Alpha Device Corporation’s quality management system defines the way in which third-party components may be incorporated into a product. These include performing an audit of the supplier’s development processes and, to mitigate the risk of BCI stopping support for the component, access to the source code and build system for the component.