A method for feedback-based optimization of a measurement data life cycle in joining processes during production, comprising the following steps: 1) analysing and simulating production on the basis of assumptions, in particular on the basis of production data, in order to prepare an initial production strategy and/or inspection strategy, 2) preparing and/or adapting a production and/or inspection order, 3) checking the production and/or inspection order for consistency, 4) exporting and storing the production and/or inspection order, 5) aligning and/or joining a component made of at least two sub-assemblies in an assembly zone, 6) analysing and simulating production on the basis of actual measurement results and feedback of an optimized production and/or inspection order into method step 2), and 7) at least one repetition of method steps 2) to 6). The invention also relates to a device for carrying out the method.