Deadline for Marine Corps Enterprise Network Unclassified Networked Shared Drive Migration to Office 365 SharePoint Online

1.  Situation.  This is a coordinated DCI IC4, PEO 
Digital MARADMIN to provide stakeholder notification of the 30 
September 2025 deadline for unclassified networked shared drive 
migration to Office 365 SharePoint Online (SPO) discussed in 
reference (a).  This MARADMIN also reiterates references (b) and (c)
guidance for networked shared drive migration and resources 
available to stakeholders between now and the 30 September 2025 
deadline to complete migration.    
2. Mission.  All content currently stored on MCEN unclassified 
networked shared drives must be transferred to SPO, and all 
networked shared drives currently hosting such data must be disabled
and decommissioned NLT 30 September 2025.  Sharegate licensing and 
the Microsoft technical support required for shared drive migration
ends in 4Q, FY25 and will not be funded in FY26 or beyond.  
3.  Execution. 
3.A.  Commander's Intent. 
3.A.1.  Networked shared drive migration of Marine Corps Enterprise
Network (MCEN) general purpose unclassified file storage and sharing
services from on-premises services to enterprise cloud-based office
productivity services enables establishment of a common digital 
operating environment providing access to standardized computing
technologies, interoperable applications, and enabling enduring 
access to Marine's data throughout their careers.
3.A.2.  By transitioning to cloud-based file storage solutions like
SharePoint Online (SPO), the U.S. Marine Corps aims to capitalize on
its advanced features such as real-time collaboration, enhanced 
search capabilities, and robust security measures. This shift will
streamline our organization's workflow and data management 
practices, bolster the Marine Corps' cybersecurity posture, enhance
compliance with data protection regulations, and facilitate the 
phasing out of outdated networked drive technology.
3.B.  Concept of Operations.
3.B.1.  Organizations and individuals who have not scheduled 
unclassified MCEN general purpose networked personal and 
organizational shared drive services migration will initiate 
migration plans and execution to the existing unclassified 
cloud-based personal and organizational file storage. Guidance for
initiating migration process is available at the following site: 
https://usmc.sharepoint-mil.us/sites/SPO_MCC/SitePages/Shared-Drive-
Repository-(SDR)-Getting-Started-Guide.aspx.
3.B.2.  PEO Digital Workplace Services (DWS) will report networked 
shared drive content migration progress on an ongoing basis via 
Microsoft Power BI dashboard visualization.  Commanders / 
stakeholders can monitor networked shared drive migration progress
at the following link: https://app.mil.powerbigov.us/groups/me/
reports/825a6d00-e26a-4981-840d-8549cab55a78/ReportSection?ctid=f4c4
4cda-18c6-46b0-80f2-e290072444fd.
3.B.3.  Stakeholders should collaborate with the PEO Digital DWS 
Team to coordinate their migration efforts. In support of migrations
to SPO, the preferred strategy is a content-only migration. This 
process should be initiated by the command's Information Systems 
Coordinator (ISC) or Information Knowledge Manager (IKM) and carried
out by their designated migrator. This approach assumes that 
commands have a better understanding of the data to be transferred
and their SPO topology, configuration, and permission requirements.
It also ensures adherence to enterprise policies on data labeling 
and optimally integrates with an existing SPO topology and taxonomy,
which are crucial for enhancing searchability and discovery in 
collaborative environments. The PEO Digital DWS Team will work with
the G6/S6 offices to ensure that network resources are readily 
available to troubleshoot any network-related issues that may arise
during the migration and to explore other cloud-based storage 
solutions that may be more suitable depending on the organization's
specific requirements or compatibility needs.
3.B.4.  The Marine Corps Enterprise Cloud (MCEC) Concierge Team will
provide guidance to commands seeking alternative cloud solutions for
their applications or databases. To avoid any disruptions to 
business operations, it is recommended that commands or 
organizational units collaborate with them as soon as possible to 
determine if their databases or applications which cannot be 
migrated to SPO can be hosted in the USMC Enterprise Cloud 
environment. Website:  https://cloud.navy.mil/cloud.  
4.  Administration and Logistics. 
4.A.  The PEO Digital DWS Team will provide the migration tools, 
subject matter experts, and access to its migration support website
to assist stakeholders with their effort to migrate to SPO. The M365
Migration Command Center support website offers comprehensive 
guidelines on preparing content for migration, archiving outdated or
irrelevant files, and tools to identify potential issues that might
complicate migrations. 
4.B.  There is also a Frequently Asked Questions (FAQ) section that
addresses common questions and concerns that stakeholders may have
about the migration process. The website will be updated regularly
to provide information on the migration progress, such as changes to
the timeline, completed milestones, and any updates to data 
governance policies affecting shared-drive migrations.  
5. Command and Signal.
5.A.  The M365 Migration Command Center website is available at: 
https://usmc.sharepoint-mil.us.mcas-gov.us/sites/SPO_MCC/.
5.B.  Questions regarding support for shared drive migration should 
be directed to the POCs listed in this message.  POC at DCI IC4 is 
Trevor Daniel / Civ/ trevor.daniel@usmc.mil / 571-256-9082.  POC at
PEO Digital is Sandra Miller / Civilian / Sandra.miller@usmc.mil / 
703-784-6447.
5.C.  Applicability.  This MARADMIN is applicable to the Total 
Force. Release authorized by LtGen M. G. Glavy, Headquarters Marine
Corps, Deputy Commandant for Information.