Before revision: Tools for Model-Based Software or Systems Requirement Engineering Model-based systems engineering (MBSE) is the formalised application of modelling to support system requirements, design, analysis, measurement, verification and validation activities beginning in the conceptual design phase and continuing throughout development and later lifecycle phases.
After revision: Tools for Model-Based Software or Systems Requirement Engineering Model-based systems engineering (MBSE) is the formalised application of modelling to support system requirements, design, analysis, verification and validation activities beginning in the conceptual design phase and continuing throughout development and later lifecycle phases.