Microsoft Azure, one of the world’s largest cloud computing platforms, faced significant disruptions over the weekend of September 7, 2025, due to undersea cable cuts in the Red Sea. This incident caused increased latency for network traffic traversing the Middle East, impacting connectivity across Asia and Europe. Microsoft has since rerouted traffic to minimize disruptions, but the event underscores the critical vulnerabilities of the global internet infrastructure.
What Happened in the Red Sea?
On Saturday, September 7, Microsoft announced that multiple undersea fiber optic cables in the Red Sea had been cut, leading to disruptions in its Azure cloud platform. According to TechCrunch, the damage resulted in increased latency for traffic routed through the Middle East. While Microsoft did not specify the cause of the cuts, undersea cables are often damaged by ship anchors, fishing activities, or, in some cases, deliberate acts of sabotage. In a status update, Microsoft stated, “We will continuously monitor, rebalance, and optimize routing to reduce customer impact.”
Impacts on Global Connectivity
The undersea cable cuts affected not only Microsoft Azure but also broader internet services across several countries. BBC reported that internet users in nations such as India, Pakistan, and the United Arab Emirates experienced degraded connectivity. The Pakistan Telecommunication Company confirmed that the cuts occurred near Jeddah, Saudi Arabia, and warned of potential internet slowdowns during peak hours. NetBlocks, an organization monitoring internet access, corroborated that submarine cable outages in the Red Sea had significantly impacted digital connectivity in the region.
Undersea cables are vital for global internet functionality, carrying over 95% of international data. Damage to these cables can disrupt essential services like financial transactions, e-commerce, and even public health systems. According to the International Cable Protection Committee, there are an average of 150 to 200 such incidents annually, most caused by human activity such as fishing and anchoring.
Historical and Geopolitical Context
This is not the first time the Red Sea has been at the center of undersea cable disruptions. In February 2024, similar incidents occurred, with some attributing the damage to geopolitical tensions in the region. For instance, Yemen’s Houthi rebels were accused of threatening undersea cables in late 2023, amid ongoing conflicts in the Middle East. Although the Houthis denied any involvement, the area remains a hotspot for maritime and digital infrastructure threats. Fox Business noted that such incidents are reminiscent of suspected sabotage cases in the Baltic Sea, where undersea cables and pipelines were damaged following Russia’s invasion of Ukraine in 2022.
These incidents highlight the growing concerns over the security of global communication networks, particularly in politically volatile regions. The Red Sea, a crucial conduit for undersea cables connecting Asia, Europe, and Africa, is especially vulnerable due to its strategic location and heavy maritime traffic.
Microsoft’s Response and Future Implications
Microsoft acted swiftly to reroute traffic and mitigate the impact on its Azure services. By Saturday evening, the company reported that it was no longer detecting any major issues. However, the disruptions have reignited discussions about the resilience of undersea cable infrastructure. The tech giant emphasized that traffic not passing through the Middle East remained unaffected, underscoring the importance of diversified routing strategies.
As global reliance on cloud computing and internet connectivity grows, the need for robust and secure undersea cable networks becomes increasingly critical. Companies like Microsoft, Amazon, and Google, which operate massive cloud platforms, are expected to invest more heavily in safeguarding these essential infrastructures.
While Microsoft has resolved the immediate issues, the incident serves as a stark reminder of the fragility of our interconnected world. Strengthening the resilience of undersea cable networks will be crucial to ensuring the stability of global communications in the face of future challenges.