Why Signal Chief Relies on AWS: The Only Option Available

Signal President Defends AWS Reliance Amid Outage Criticism

Following the recent Amazon Web Services (AWS) outage that impacted Signal, Elon Musk criticized the encrypted messaging app for depending on big tech. However, Signal’s president, Meredith Whittaker, argues that the company had no alternative but to utilize AWS or another major cloud provider.

Whittaker emphasized that the issue lies not in Signal’s decision to operate on AWS but in the dominance of a few major players in the infrastructure space. She pointed out that the entire stack is essentially controlled by only 3-4 companies, making it challenging to find viable alternatives.

In a series of posts on Bluesky, Whittaker expressed concern over the number of people unaware of Signal’s use of AWS, highlighting the concentrated nature of the cloud infrastructure industry. She stressed the importance of examining the infrastructural needs of global communication platforms and questioning the lack of realistic alternatives to AWS and other hyperscalers.

Whittaker acknowledged that AWS, Microsoft Azure, and Google’s cloud services are the primary options for Signal to deliver reliable service on a global scale without incurring exorbitant costs to build its own infrastructure. The complexity of running a platform for real-time communications necessitates a pre-built network of compute, storage, and edge presence that demands constant maintenance and monitoring.

She clarified that Signal only partially relies on AWS and employs encryption to safeguard user conversations from being accessed by Signal or AWS. The AWS outage also impacted various other companies, including Starbucks, the Epic Games Store, Ring doorbells, Snapchat, Alexa devices, and smart beds.

Whittaker expressed hope that the AWS outage would serve as a learning opportunity, highlighting the risks associated with centralizing critical infrastructure in the hands of a few major players. She emphasized the need to diversify infrastructure options to prevent widespread service disruptions in the future.