MSI acronym stands for Microsoft Installer. This is the default and recommended deployment method for Eazfuscator.NET.
Eazfuscator.NET website provides a download page where MSI setup file can be retrieved. Once you have the MSI file you can install it on your machine.
Another popular scenario is deploying MSI through the global policy objects (GPO) in Active Directory (AD). AD MSI deployment tends to be a preffered way of installing software in middle and large software houses. More information on AD software distribution is availble in corresponding knowledge base article from Microsoft.
MSI technology is proven and reliable. If you have any doubts about what deployment method to choose for Eazfuscator.NET then please strongly consider MSI.