It is important that the IS/IT are aligned with the business strategies for the organization success. In this work I present a methodological proposal of requirements engineering that uses BMM to obtain the business strategy i(star) to represent the needs of the system actors, and BPMN to model the business processes so that they are lined up to the business strategy. As a further work it is expected to create a tool that generates the requirements of the system in a semi-automatic way.