The Industry Foundation Classes (IFC) file format is a critical component of Building Information Modeling (BIM) as it facilitates interoperability between different software applications used in the Architecture, Engineering, and Construction (AEC) industry. Understanding the IFC file format is essential for professionals working in BIM and AEC. This article provides a comprehensive guide to the IFC file format, its significance, and its impact on BIM interoperability. The IFC file format is an open, neutral, and non-proprietary file format developed and maintained by buildingSMART International. It is designed to enable the exchange of information between different BIM software applications, regardless of the vendor or platform. The IFC file format supports the representation of building and infrastructure data, including geometric and semantic information. It allows for the exchange of 3D models, building elements, property sets, and other related information. The use of IFC in BIM workflows promotes collaboration, data exchange, and interoperability among stakeholders involved in the design, construction, and operation of built assets. By using the IFC file format, project teams can share and exchange BIM data seamlessly, leading to improved coordination, reduced errors, and better decision-making throughout the project lifecycle. Additionally, the IFC file format aids in the integration of various BIM datasets, such as architectural, structural, and MEP models, into a single coherent representation of the built environment. This integration enables comprehensive analysis, visualization, and simulation of building projects, supporting better-informed design and construction processes. As BIM adoption continues to grow globally, the importance of the IFC file format in achieving interoperability cannot be overstated. It serves as a common language for BIM data exchange, allowing stakeholders to communicate and collaborate effectively, regardless of the software tools they use. As a result, the IFC file format plays a crucial role in breaking down silos, streamlining workflows, and improving the overall efficiency of the AEC industry. In conclusion, the IFC file format is a vital enabler of BIM interoperability, facilitating seamless data exchange and collaboration among diverse BIM software applications. Its open and neutral nature makes it an essential tool for achieving integrated, efficient, and coordinated building projects. As BIM adoption and digital transformation continue to reshape the AEC industry, a clear understanding of the IFC file format is indispensable for industry professionals seeking to harness the full potential of BIM and achieve better outcomes in their projects.