Assemblies are huge models which are created by combining numerous smaller components, that is, individual parts or subassemblies. Solidworks allows users to model assemblies with the scope for detailed customization, where the components of the assemblies can be edited, moved, and rotated before they are joined together in appropriate positions. Solidworks offers Finite Element Analysis (FIA) feature which can assess the behavior of assemblies when loads such as pressure, centrifugal force, temperature, and gravity are applied on them. This helps users to analyze how the assemblies are likely to act when the models are realized. Solid Edge is also highly effective in assembly modeling; users can create their models by stating a range of relationships between different parts, such as planar align relationship, axial align relationship, mate relationship, and so on. In-built commands help to make the assembly modeling process smooth, fast, and flexible with Solid Edge.