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Each week, the CMS Hybrid Cloud program provides a list of upcoming changes, maintenance windows, and updates to help customers build awareness and plan effectively and summarizes changes from the previous week.
This newsletter includes:
Completed change summary for the week of 6/25/2026
- 6/26/2026 - Enterprise Testing Services Maintenance
- 6/28/2026 - Marketplace SSM Patching - Prod
- 6/29/2026 - Migrate Splunk DRaaS ITSI from AL2 to AL2023
To learn details about previous changes please go to the News and Updates section on cloud.cms.gov. (Secure Access required)
For Patching and Gold Image release schedule please view: Patching and Gold Image Release Calendar - 2026
AWS Patch Tag Naming Update
Beginning July, AWS team will convert patch tags naming from
· Patch Group to Patch_Group
· Patch Window to Patch_Window
The tag name change in AWS will "Allow tags in metadata" setting is enabled on instances, to align with the system requirement and avoid metadata-related issues. The updated tag format will be used going forward.
The patching team will create the ITC changes starting July 22, 2026, according to the following schedule:
· Lower Environments: July 22, 2026
· Production: July 29, 2026
· Marketplace Production: August 9, 2026
As this is a behavioral change in the patching process, Technical Advisors are requested to coordinate with their respective ADOs and hosting coordinators to ensure the new tag format is updated and adopted in all future deployments. This change is specific to AWS patches only.
Please contact Enterprise Patching Team for questions / Concerns.
7/7/2026 - Migrate Splunk DRaaS ITSI from AL2 to AL2023
Summary:
This change will migrate the Splunk DRaaS ITSI application from Amazon Linux 2 (AL2) to Amazon Linux 2023 (AL2023) to maintain operating system support, improve security posture, and align with CMS cloud modernization standards.
Actions we are taking:
Replacing DRaaS ITSI Search Head with a new AL-2023 server.
When is this happening?
Start Time: Tuesday, 7/7/2026 at 5:00 p.m. ET
End Time: Tuesday, 7/7/2026 at 10:00 p.m. ET
Who will be impacted?
DRaaS ITSI Services will be impacted.
What is the impact?
Splunk users can experience some latency during the migration accessing the application.
Need help? We are here to support you.
If you have any questions, don't hesitate to reach out to your assigned Hosting Coordinator. CMS IT Support can be reached via cloudsupport@cms.hhs.gov, or call (800) 562-1963, and is documented here at Support Page on cloud.cms.gov.
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