Find the word definition

Wikipedia
IExpress

IExpress is a Microsoft utility bundled with various editions of Windows operating systems (32-bit and 64-bit): Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows 8, Windows 10 and Windows Server 2012. It was also included as part of all Internet Explorer Administration Kit releases 4, 5 and 6, and was part of all installations of Internet Explorer 6.
IEXPRESS.EXE is used to create a single self-extracting package from a set of files. Such packages can be used to install applications, executables, drivers, other system components, or setup bootstrappers.