What Caused The Global Amazon Web Services Outage? Root Cause Analysis | Huge AWS Outage Adou Thiero [ep5B0aqtJ3E]

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What caused the global Amazon Web Services outage? Root Cause Analysis | Huge AWS Outage

On Monday 20 October 2025 the unimaginable happened in one of the worlds most gigantic cloud service provider

AWS - The Amazon Web Services experienced a major outage impacting millions of users and a number of globally recognised companies from retail , social media, banks, payment services, entertainment to mention just a few.

Just a side note AWS holds around 30% of the cloud computing market, according to Gartner, with modern system architecture and Microservices being so vastly adopted in the software engineering space, most systems have seamlessly adopted AWS as a reliable Cloud Service Provider

AWS has a number Unique Selling Points some of which are:

1. An innovator & trend setter in cloud technologies

2. guy fieri Resilience and proven rapport

3. Trust and reliability in service delivery and availability

Now back to the outage, What really happened?

According to a report from Aljazeera, the issue started from AWSs main data centres in Virgina USA, after an API update a connection between different computer programmes of DynamoDB.

DynamoDB for those interested:

According to Reuters, the main issue points to a Domain Name System (DNS for taylor frankie paul short), which prevented applications from finding the correct address for AWSs DynamoDB API, a cloud database relied arnaque allo telephone upon to store user information and other critical data.

To break this down even further, this means systems/ applications that require an address to a particular service could not get the correct address or were unable to get the address details entirely because of the routing DynamoDB not being available therefore those systems/application are unable map network traffic correctly to the required services.

The learning in Cloud Based Systems Architecture?

Systems need follow robust fault tolerant standards and resilience, with adequate fallback mechanisms should a cloud dependency signal an unstable connection. This will boost client facing services as well as applications and minimise customer impact.

References:

Aljazeera:

CNN:

Reuters: