Merge pull request #54239 from PhilKang0704/2026_4-Monthly-broken-links-fix-pk-813

2026_4-Monthly-broken-links-fix-pk-813

Author: prmerger-automator[bot]

learn-pr/philanthropies/identify-key-hardware-it-infrastructure-components/includes/5-summary.md

@@ -24,7 +24,6 @@ The module also covered key components of network infrastructure, such as switch
 - [UGreen: Network Attached Storage: Everything Explained](https://nas.ugreen.com/blogs/knowledge/network-storage-nas-guide)
 - [IBM: What is network attached storage (NAS)?](https://www.ibm.com/think/topics/network-attached-storage)
 - [GreenCloud: What is a Data Center Firewall?](https://blog.greencloudvps.com/what-is-a-data-center-firewall.php)
-- [VMware: What is a data center firewall?](https://www.vmware.com/topics/data-center-firewall)
 - [Datacenter Knowledge: Next-Gen Networking: Exploring the Utility of Smart Routers in Data Centers](https://www.datacenterknowledge.com/switches-routers/next-gen-networking-exploring-the-utility-of-smart-routers-in-data-centers)
 - [Databank: Demystifying Data Center Networking: A Beginner’s Guide](https://www.databank.com/resources/blogs/demystifying-data-center-networking-a-beginners-guide/)
 - [Coruzant Technologies: An Ultimate Guide To Data Center Switches](https://coruzant.com/infrastructure/an-ultimate-guide-to-data-center-switches/)

learn-pr/philanthropies/learn-contributing-local-economies-through-datacenters/includes/14-summary.md

@@ -8,7 +8,7 @@ This module examined the vital role datacenters play in shaping local economies
 - [Microsoft Datacenters in Washington](https://local.microsoft.com/wp-content/uploads/2024/04/Microsoft-datacenters-in-Washington.pdf) 
 - [Oxford Economics: Data Center Impacts](https://www.oxfordeconomics.com/resource/data-center-impacts/)
 - [Datacenter Coalition](https://www.datacentercoalition.org/cpages/press-release-national-impact-study-2023)
-- [OFC: Data centers contribute $2.1T to the U.S. economy](https://www.ofcconference.org/ofc-blog/2023/11/data-centers-contribute-$2-1t-to-the-u-s-economy)
+- [OFC: Data centers contribute $2.1T to the U.S. economy](https://www.lightwaveonline.com/data-center/article/14299249/data-centers-contribute-21t-to-the-us-economy)
 - [AWS: Learn about AWS's long-term commitment to Virginia](https://www.aboutamazon.com/news/aws/aws-commitment-to-virginia)
 - [Governor of Virginia: Amazon Web Services Plans to Invest $35 Billion in the Commonwealth by 2040 to Expand Data Center Campuses](https://www.governor.virginia.gov/newsroom/news-releases/)
 - [EU STEM Coalition: Programs](https://www.stemcoalition.eu/programmes/)

learn-pr/philanthropies/understand-purpose-evolution-datacenters/includes/9-summary.md

@@ -15,7 +15,7 @@ The module also covered the core components of datacenters, such as power supply
 - [DCHost: What is a Data Center? Why is it Important for Web Hosting?](https://www.dchost.com/blog/en/what-is-a-data-center-why-is-it-important-for-web-hosting/)
 - [Datacenter Dynamics: An ode to data centers - From server rooms to critical infrastructure](https://www.datacenterdynamics.com/en/broadcasts/management-and-operations/2025/an-ode-to-data-centers-from-server-rooms-to-critical-infrastructure/)
 - [Building the Backbone of the Digital Economy and Financial Innovation through Strategic Investments in Data Centers](https://ijisrt.com/building-the-backbone-of-the-digital-economy-and-financial-innovation-through-strategic-investments-in-data-centers)
-- [The Role of Data Centers in Powering Retail's Digital Transformation](https://articleterrain.com/the-role-of-data-centers-in-powering-retails-digital-transformation/)
+- [The Role of Data Centers in Powering Retail's Digital Transformation](https://content.techgig.com/technology-guide/the-role-of-data-center-solutions-in-digital-transformation/articleshow/115888809.cms)
 - [LSE Research Online: Computing the everyday: social media as data platforms](https://eprints.lse.ac.uk/81432/1/Kallinikos_Computing%20the%20everyday_2017.pdf)
 - [Technology Magazine: The New Era of AI and its Impact on Data Centers](https://technologymagazine.com/articles/the-new-era-of-ai-and-its-impact-on-data-centres)
 - [The Internet of Things: Definitions, Key Concepts, and Reference Architectures](https://link.springer.com/chapter/10.1007/978-3-030-41110-7_1)