The "w64" in the filename signifies the 64-bit architecture. In 2016, this was a vital transition. As data sets in Excel became larger and PowerPoint presentations more media-rich, the 32-bit limitation of 2GB of RAM became a bottleneck. The 64-bit version of Office 2016 allowed the suite to utilize the full power of modern hardware, ensuring that complex financial modeling and high-resolution design work could be performed without software crashes.
Assuming you legally obtained a VL or retail ISO: swdvd5officeprofessionalplus2016w64english new
: Designer feature for automated slide layouts and seamless online sharing. The "w64" in the filename signifies the 64-bit architecture