LDAP, the Lightweight Directory Access Protocol is a standards-based protocol that sits on top of TCP/IP and allows clients to perform a variety of operations in a directory server, including storing and retrieving data, searching for data matching a given set of criteria, authenticating clients, and more. The HostBill integration allows to sell any AD/LDAP-Authenticated service and charge for number of active users in AD/LDAP Group. When creating AD / LDAP product in HostBill, admin can set limit of users that customer can create under the account. Using the "Allow to select by client during order" function will create a form element which can apply additional pricing for user-entered value. An AD/LDAP Group can be later used by a client for various purposes, for example to authenticate Remote Desktop service. The client can manage users within the group from admin area: list, add new, modify existing users details and remove users from AD / LDAP group. Groups are created in AD/LDAP automatically by HostBill. HostBill also automates removing users from the group and upgrades/downgrades. The admin can view and manage billing details and control account lifecycle.