AWS Outage: A Major Risk For The Financial Sector?

The disruption at Amazon Web Services (AWS) highlights a critical vulnerability for the global financial sector.

As digital infrastructure increasingly relies on a handful of major cloud providers, the incident serves as a stark reminder of the financial and operational risks associated with this dependency.

The outage, which affected millions of users and a wide array of online services, raises important questions for financial institutions about their own resilience strategies.

In a statement, AWS confirmed it was experiencing “significant error rates for requests made to the DynamoDB endpoint in the US-EAST-1 Region.”

AWS added: “This issue also affects other AWS Services in the US-EAST-1 Region. During this time, customers may be unable to create or update Support Cases. Engineers were immediately engaged and are actively working on both mitigating the issue and fully understanding the root cause.”

The impact of cloud service disruption

The problems originated at Amazon's North Virginia data centres, affecting foundational services like DynamoDB and EC2.

These services provide the database and computing power that thousands of companies, including many in the financial sector, rent to run their applications.

When these core components fail, the consequences are immediate and widespread, affecting everything from payment processing to core banking applications.

The fragility of this digital foundation was exposed as millions of customers found themselves unable to access services from major financial institutions and FinTech platforms.

Among the companies affected were:

• Lloyds
• Bank of Scotland
• Barclays
• HMRC
• Slack
• Zoom
• Vodafone

This widespread disruption demonstrates how interconnected the digital economy is and how a single point of failure can have a cascading impact across multiple industries.

A recurring pattern of outages

This is not the first time an AWS outage has caused widespread disruption. The cloud provider has experienced several major incidents over the years.

In 2012, a 20-hour outage on Christmas Eve led to a partial failure of Netflix's streaming service, which continued into Christmas Day.

A similar event in December 2021 created problems for Amazon's retail customers during the peak festive shopping season.

Another incident in June last year involving AWS Lambda caused increased error rates that affected organisations such as The Boston Globe and the Associated Press.

These events show that even the most advanced infrastructure from the largest tech companies remains vulnerable to failure.

The issue is not unique to AWS. Microsoft Azure has also faced similar challenges. In January 2023, a network issue at Microsoft Azure resulted in an outage that affected Teams 365 and Outlook. Such disruptions can do more than cause inconvenience.

In regulated industries like finance, downtime can compromise audit trails and jeopardise compliance standards, creating legal and financial risks.

Building resilience in a dependent world

The reliance on major cloud platforms means that the failure of one can have far-reaching consequences.

“When one of the major cloud platforms goes down, it reminds everyone how interconnected modern business systems have become,” says George Foley, Technical Advisor at ESET Ireland, a subsidiary of global software company ESET, of AWS’ ongoing outage.

George explains: “Even if your own website or app isn’t hosted on AWS, there’s a good chance something you use from your CRM to your payment processor is. Outages like this highlight the importance of having resilience plans in place, including backups and alternative routes for essential data and services.”

Internet disruptions can inflict billions of dollars in annual losses through their impact on revenue, productivity and company reputation.

Major global outages have been known to result in costs exceeding a billion dollars individually. For mid-sized enterprises, every minute of downtime can mean thousands in lost revenue. According to a 2024 survey, 76% of global respondents run applications on AWS and the service powers more than 90% of Fortune 100 companies.

This extensive reliance suggests the question is not if another outage will happen but how severe its impact will be. For leaders in the financial sector, the focus must be on developing robust strategies to mitigate these inevitable risks.