Today marks the 31st anniversary of the public release of Windows NT 3.5. Windows NT was targeted at the enterprise sector, contrasting with Windows 3.1, which was aimed at casual users. It was a fully 32-bit operating system requiring a minimum of an 80386 processor and 12MB of RAM. Windows NT featured cross-platform capabilities, with builds for various architectures, including MIPS, DEC's Alpha, and PowerPC. The user interface of NT 3.5 resembled Windows 3.1, which may have affected its adoption among professional users. Nine months after NT 3.5, Windows NT 3.51 was released, enhancing compatibility with Windows 95 applications. Windows NT 4.0, released in 1996, integrated the Windows 95 shell, leading to Windows 2000 and ultimately Windows XP in 2001, which unified workstation and consumer markets under a single NT codebase. Windows NT 3.5 was a crucial transitional release that laid the groundwork for future operating systems.