BIM is leading the construction towards a more digital, resilient and sustainable sector. A pillar, introduced by standards, to sustain the collaborative BIM environment is the Common Data Environment, which consists of centralized storage where all the information are gathered, shared and managed. Many different IT solutions can be adopted for different typologies of CDE. Project Server, Extranet, File-Based Retrieval System, Cloud-Storage and more innovative integration of Blockchain and IPFS. Most of them present drawbacks and benefits from their implementation. This study aims to clarify their characteristics and compare them to provide the sector with a clearer view of the different typologies of CDE.