for BIM software and cloud-based services. Exactly as happens with client proprietary BIM software, online dedicated solutions are not suitable for the archaeological domain. For example, Autodesk BIM 360 is probably the most popular online platform designed for the Architecture, Engineering and Construction (AEC) industries and is perfectly integrated with Autodesk Revit. This cloud-based solution is a complete, stable and secure suite for data sharing and exchange, especially regarding BIM projects carried out via Autodesk Revit. Its features rely on a safety management of IFC data in a collaborative cloud environment. Nevertheless, its peculiarities have been designed for new constructions and technical installations [9]. Archaeological BIM projects can be managed within already cited commercial solutions; thanks to the IFC format, information can be dynamically linked to parametric objects referred to archaeological peculiarities. However, this data requires complex, stable and tailor-made databases and management instruments, which is difficult to find inside software designed for the needs of modern buildings.  
There are other solutions and unconventional ways to adapt BIM methodologies and instruments to archaeological studies [3; 10; 11]; in this regard, the utilization and adaptation of FOSS solutions to HBIM and building archaeology research has been demonstrated through the utilization of FreeCAD software [12] in order to obtain an operative, informative system based on BIM methodology [11; 13]. For this reason, FOSS tools (in particular, web programming languages) can be utilized and dynamically adapted for generating something new and useful for archaeological purposes [14]. Thus, archaeological and Heritage asset documentation requires specific solutions to ensure data protection and exchange, especially because remote collaborations have become a daily occurrence. Dedicated web and cloud-based platforms should therefore ensure the access and management of information related to excavations or surveys. As has been recently proven by a cooperative project, archaeological collaborations have become difficult due to the distance involved; this project, carried out by Polytechnic of Turin and Sapienza University of Rome, focused on an HBIM design for the integration of archaeological data of the _Domus Regia_, an important religious building of the Roman Forum (Rome, Italy) [15]. Working remotely, both academic teams have used two cloud-based BIM solutions (BIMData and the platform here presented) as common environments for mutual revisions and data integration. In this regard, dedicated online platforms and services become essential for the purpose of shortening distances and time.  
For this reason, the main goal of this work was the creation of an ad-hoc cloud-based solution for HBIM projects related to archaeology, designing a platform able to collect different types of semantic data, including instruments for their investigation. Hence, this manuscript shows the design and development of a custom cloud-based HBIM platform suitable for archaeological documentation, in order to ease remote data accessibility and collaborations among project members. This project shows novelties concerning archaeological documentation and collaborations, as well as HBIM data exchange via cloud environments. This proposal, carried out through an ad-hoc web development, attempts to solve remote accessibility and revisions regarding HBIM archaeological projects, creating an online smart environment open to collaborations.