%X We present a white-box conceptual framework for adaptation. We called it CODA, for COntrol Data Adaptation, since it is based on the notion of control data. CODA promotes a neat separation between application and adaptation logic through a clear identification of the set of data that is relevant for the latter. The framework provides an original perspective from which we survey a representative set of approaches to adaptation ranging from programming languages and paradigms, to computational models and architectural solutions. %L eprints1582 %T A Conceptual Framework for Adapation %A Roberto Bruni %A Andrea Corradini %A Fabio Gadducci %A Alberto Lluch-Lafuente %A Andrea Vandin %I IMT Institute for Advanced Studies Lucca