- The Google Cloud outage affected multiple banks and public service systems in the UK.
- The outage lasted nearly eight hours, impacting up to 38 cloud products.
- The incident highlights the risks of cloud dependency, as outages can affect multiple industries.
- UK regulators have expressed concerns over the concentration of services provided by technology suppliers.
On October 20, Google Cloud experienced a significant outage that disrupted multiple banking applications, websites, and public services in the UK, originating from a power-related incident in one of the company's availability zones in London. Affected services included payments, fund transfers, deliveries, property inquiries, and remote court hearings, demonstrating how a failure in a single cloud region can have widespread effects on the entire digital economy. Google stated that the incident impacted several services in its europe-west2 region, which serves customers in London.
Although engineers began restoring services on the same day, the outage lasted nearly eight hours until Google announced that the incident was resolved.
Google attributed the outage to a "power event" in its europe-west2-b availability zone, one of three availability zones in the London cloud region. The incident began around 6:08 AM UTC (7:08 AM BST). According to Google's official cloud service health dashboard, the incident affected 38 cloud products, including AlloyDB for PostgreSQL, Apigee, BigQuery Data Transfer Service, Cloud Run, and Google Kubernetes Engine.
The company initially reported errors and service disruptions, with engineering teams investigating the issue. According to The Register, Google prioritized restoring existing workloads and warned customers that they might not be able to create new workloads immediately. Ultimately, the company reported that affected services had been restored, concluding the incident after seven hours and fifty-two minutes. Google has yet to provide a complete technical explanation regarding the power event.
Widespread Impact of the Outage
The outage quickly spread beyond cloud infrastructure. According to Reuters, the UK digital bank Revolut experienced related service disruptions, affecting functionalities including card payments and ATM withdrawals. Revolut stated that customer funds and data remained secure. Customers also reported difficulties using services from Lloyds Bank, HSBC, and Halifax. Meanwhile, the outage affected the video system used for remote court hearings in England and Wales, potentially delaying defendants' court appearances. Other reported services that may have been impacted include the property platform Rightmove, parcel delivery companies DPD and Royal Mail, telecom provider BT, and retailer Screwfix.
The specific impact on organizations varied, and not every reported service issue was independently confirmed as a direct consequence of the cloud event.
Regulatory Concerns
The Guardian reported that the UK's Financial Conduct Authority (FCA) is in discussions with Google and affected companies to understand the incident's impact. This event highlights the risks associated with cloud dependency. It shows that regional infrastructure failures can affect seemingly unrelated organizations. Banks, retailers, delivery companies, and public services may all rely on parts of the digital operations provided by the same cloud supplier, meaning a single disruption can ripple across multiple industries. Cloud providers operate multiple availability zones to help clients build resilient systems. However, merely using a major cloud provider does not guarantee uninterrupted service.
Organizations must design applications to tolerate infrastructure failures, appropriately distribute critical workloads, and test backup and recovery procedures.
At the time of the outage, UK regulators were increasingly concerned about the concentration of critical financial services provided by a small number of technology suppliers. Reuters reported that UK regulators have brought Google Cloud and other major cloud companies under direct oversight as critical third-party suppliers to the financial sector. Google's dashboard has now marked the incident as resolved. The company expects to provide further technical details through an incident analysis.
Impact of Cloud Outages Across Industries
This Google Cloud outage underscores the profound impact of cloud services across various sectors, particularly in finance and public services. The outage not only affected banks' payment systems but also delayed court proceedings, highlighting the vulnerabilities of relying on a single cloud provider. As more organizations depend on cloud infrastructure, this incident serves as a reminder for businesses to strengthen the resilience of their systems and design applications that can tolerate failures. The involvement of regulators also reflects concerns over the centralization of cloud services, which may lead to more regulatory measures in the future to ensure the stability of the digital economy.