You have an existing on-premises network with several legacy applications that rely on LDAP queries for their functionality, utilizing an existing directory service. As part of your IT strategy, you are transitioning this on-premises infrastructure to a cloud-only infrastructure. Your task is to identify and recommend an appropriate identity solution that can support these legacy applications in the new cloud environment. The recommended solution should also aim to minimize the ongoing administrative effort required to maintain the infrastructure. Which identity service should be included in your recommendation?