(As a domain administrator, sometimes you need to add user accounts to the AD domain in batches. These user accounts have some of the same attributes and some different attributes. If you add and set them one by one on the graphical interface, the time and manpower required will exceed the acceptable range. Generally speaking, if there are no more than 10, you can use AD user account replication to achieve. If there are more, you should consider using command line tools to import and export objects in batches. Microsoft provides two batch import and export tools by default, namely CSVDE (CSV Directory Exchange) and LDIFDE (LDAP Data Interchange Format Directory Exchange))