This work is a proposal of methodology for the Development and implementation of web systems in an agile way, following the Build-Measure-Learn cycle. At each stage of the cycle, methods and tools are defined to create a Minimum Viable Product (MVP), in order to quickly deploy the system to begin a stage of functionality and usability tests, and thus obtain feedback for the creation of the next MVP, in this way the developed product will scale through the new needs that the client has, we integrated the tools and methods defined by the Extreme Programming (XP) methodology for the build phase and the ISO / IEC 29119 standard for the testing stage. The implementation of this proposal methodological it was made in the development of the File from Aspirants’s System to the Instituto Tecnológico de México /Campus Apizaco.