A brief on AutoCAD software and its applications Nowadays, the technological revolution has more or less impacted the entire world. The architectural, engineering and construction (AEC) industry has also significantly revolutionized due to the technological revolution. The AEC professionals have started the practice of digital designing and drawing instead of paper based designing and drawing by using CAD technology. The AEC professionals use various types of software applications for developing CAD designs, drawings and plans. AutoCAD is one of the popular computer-aided-design applications amongst the others. Autodesk AutoCAD is basically computer-aided-design software that is used for developing CAD drawing, plan and design of any type of building, structure, product, etc. In the AEC industry, AutoCAD is notably used for carrying out the CAD drafting project in an efficient manner. With the growing demand of CAD technology, the usage of AutoCAD has also increased significantly over the years in the AEC industry. Use of AutoCAD in construction industry With the technological advancement, lots of changes have also come in the pattern of building design. Nowadays, many complicated building structure is developed all over the world for residential or commercial purpose. Earlier, it was really a time consuming job to develop design of any type of building, Because of AutoCAD, nowadays, it is now possible to create design of any type of building in an efficient manner. In construction industry, the AutoCAD software is immensely used in the preconstruction phase for accomplishing different types of design tasks in a precise manner. Since its inception, this software has brought a notable and significant change in the technique of drafting as well as 3D modeling. It has enabled the professionals to increase their productivity and efficiency to a great extent. The AutoCAD software consists of various types of advanced tools that help the design and construction professionals to produce high quality, flawless and accurate designs for their projects. By using this software, architects prepare comprehensive set of architectural drawings such as elevation drawing, sections and 2D floor plan drawings for the proposed building. The structural engineers carry out the structural drafting and steel detailing project in the AutoCAD platform. The MEP (mechanical, electrical and plumbing) engineers utilize this software for producing HVAC system design, electrical schematic drawing and plumbing system drawing in an accurate and efficient manner. Beside 2D drawing and plan, AutoCAD is also used for developing 3D model of the proposed building. Hence, it is a very important software for the design and construction professionals.