A computer implemented method comprises receiving one or more images of a computing environment comprising a plurality of interconnected components, analyzing the or each received image to identify each component shown in the image(s) and the connection(s) of each identified component, by identifying a set of attributes for each component from the image(s) and matching the identified attributes to attributes of known components stored in a database, obtaining a specification for each identified component, and generating a document comprising each identified component, its respective specification and the connection(s) of each identified component.