Allegient Services architectes advanced hybrid architectures that marry Microsoft 365 to on-premises infrastructure. Their offerings consist of Azure AD Connect with bespoke sync rules for complex organizational designs, SharePoint hybrid implementations preserving legacy document system access, and Teams telephony integrations with current PBX systems. For an international energy firm, they developed a Microsoft 365 hybrid model that preserved on-premises storage of drilling operation data while allowing cloud collaboration for corporate teams by maintaining seamless integration.