Abstract: A method of exchanging data descriptive of technical installations between at least two applications is provided, a said application being able to provide and/or to consume data according to an associated application data model, the method allowing interoperability between applications by virtue of an exchange of the data expressed and formalized through at least one chosen standard having an associated data model and associated exchange formats, implemented by a programmable device. For at least one application, the method includes the integration (T1x) of the application data model in a same semantic web data representation language, termed a common representation language, and, for each chosen standard, the integration (T2x) of the data model into a semantic web modeling language.