What is the meaning of Windows 2000 ente

Greetings,

Were discussing moving form Windows NT 4.0 to Windows 2000. Im looking at taking a few courses. One titled “Windows 2000 Active Directory Planning and Migration:Hands-On. Under Who should attend it states “This course is valuable for anyone involved in designing and deploying a Windows 2000/XP network as an enterprise business solution.” I don’t know if we are deploying as an enterprise solution? Whats the meaning?

Thanks