A method comprises receiving, at a build service of a build server, an external dataset and an adaptor application module, the external dataset being in a specific format, the adaptor application module providing information relevant to a build pipeline maintained by the build service for building an output dataset based on the external dataset, the information including changes to the external dataset since a previous build of the output dataset is performed and a data schema used in the previous build, the build pipeline involving data only in one or more formats other than the specific format; incorporating the external dataset into the build pipeline without the external dataset being reformatted in accordance with requirements of the build service; receiving a request from the adaptor application module for specific information relating to a most recent data build run by the build service; providing a response to the adaptor application module.