1. A computer-implemented method for managing documents in a computing system environment, comprising: identifying a placeholder object included in a document having a document-level object, the document-level object being configured in a first format associated with a first set of constraints, and the placeholder object having metadata corresponding to a software-level object, the metadata comprising an identifier of a first repository associated with the software-level object, wherein: a first process executed by a processor manages the document-level object; and a second process executed by the processor maintains the software-level object; generating, by the first process, a query message based on the placeholder object, the query message comprising the identifier; receiving, by a first process, a response to the generated query message from the second process, the response comprising software-level object content associated with the software-level object, the software-level object content being in a second format associated with a second set of constraints; transforming, by the first process, the second format of the software-level object content included in the response to the first format of the document-level object; merging, by the first process, the transformed software-level object content in the document, based on the placeholder object in the document; and generating, by the first process, an output document based on the transformed software-level object content and the document-level object, such that the software-level object content replaces the placeholder object in the output document.