For years, we’ve worked with organisations that wanted to retire Active Directory but couldn’t. <\/p>\n\n\n\n
They had modernised applications, migrated workloads to Azure, adopted Microsoft 365, implemented Microsoft Entra ID, and embraced cloud-first operating models. Yet despite significant investment in transformation initiatives, one dependency consistently remained.\u00a0<\/p>\n\n\n\n
File shares. <\/p>\n\n\n\n
Time and again, we see organisations maintaining domain controllers, identity synchronisation platforms, and supporting infrastructure for one reason only. Their file services still depend on Active Directory. <\/p>\n\n\n\n
This challenge has delayed countless Active Directory retirement programmes, increased operational costs, and introduced unnecessary complexity into otherwise modern environments.\u00a0<\/p>\n\n\n\n
Microsoft’s recent general availability announcement of Entra-Only Authentication for Azure Files may finally change that. <\/p>\n\n\n\n
More importantly, it presents organisations with an opportunity to revisit transformation initiatives that have stalled and accelerate their journey towards a truly cloud-native identity model. <\/p>\n\n\n\n
Microsoft’s new Azure Files Entra-Only Authentication capability enables organisations to provide SMB file access using cloud-only Microsoft Entra ID identities. For many organisations, this removes one of the final technical dependencies preventing Active Directory retirement while simplifying identity, governance, and security operations. <\/p>\n\n\n\n
While the technology itself is significant, the real opportunity lies in using it as a catalyst to simplify identity architecture, strengthen governance, reduce operational overhead, and accelerate broader cloud transformation initiatives. <\/p>\n\n\n\n
Retiring Active Directory has never been as simple as switching off domain controllers. <\/p>\n\n\n\n
For most organisations, Active Directory sits at the centre of a complex web of dependencies built over many years. Applications, authentication workflows, legacy permissions models, governance processes, and file services all need to be carefully considered before infrastructure can be decommissioned. <\/p>\n\n\n\n
While many of these dependencies now have modern cloud alternatives, file services have\u00a0remained\u00a0one of the most persistent challenges.\u00a0<\/p>\n\n\n\n
Even organisations that have successfully modernised identity and adopted Microsoft Entra ID often find themselves retaining Active Directory purely to support SMB file access. <\/p>\n\n\n\n
The result is an uncomfortable reality. <\/p>\n\n\n\n
Critical identity infrastructure\u00a0remains\u00a0in place, not because it continues to deliver strategic value, but because organisations lack\u00a0a viable\u00a0path forward for file services.\u00a0<\/p>\n\n\n\n
Microsoft’s Entra-Only Authentication for Azure Files removes what has historically been one of the most significant barriers to Active Directory retirement. <\/p>\n\n\n\n
For the first time, organisations can provide identity-based SMB access using cloud-only Microsoft Entra ID identities without requiring: <\/p>\n\n\n\n
Microsoft Entra ID now acts as the Kerberos authority for supported Azure Files workloads, allowing users to authenticate directly through cloud-native identities.<\/p>\n\n\n\n
From an end-user perspective, the experience\u00a0remains\u00a0largely unchanged.<\/p>\n\n\n\n
From an infrastructure perspective, however, the implications are significant. <\/p>\n\n\n\n
The dependency on traditional domain services for SMB authentication can finally be removed.\u00a0<\/p>\n\n\n\n
While the announcement is significant, organisations should understand several important requirements before incorporating Azure Files Entra-Only Authentication into their Active Directory retirement strategy. <\/p>\n\n\n\n