Simplify the following text for a Grade 13 native English-speaking person.
Original: Novell criticized Microsoft 's Active Directory , the new directory service architecture , as less scalable or reliable than its own Novell Directory Services ( NDS ) alternative .
Simplified: Novell ( a competitor of Microsoft ) did not think that Microsoft 's new directory service product ( part of Windows 2000 ) was as good as their own Novell Directory Services ( NDS ) technology .