Braze: AWS US East 1 outage
Braze reported a major AWS US East 1 outage starting 2025-10-20 16:21 UTC, resolved 2025-10-20 23:41 UTC. AWS capacity shortages delayed Data Processing and Outbound messaging on US03 and US05; affected Twilio services disrupted SMS authentication and messaging. Engineers load-balanced work and cleared backlogs; Twilio recovered.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Affected components: SDK Data CollectionUS 06 Cluster - SDK Data CollectionDashboardUS 06 Cluster - DashboardData ProcessingUS 02 Cluster - Data ProcessingUS 02 Cluster - SDK Data CollectionDashboardUS 10 Cluster - DashboardData ProcessingUS 03 Cluster - Data ProcessingData ProcessingUS 01 Cluster - Data ProcessingDashboardUS 02 Cluster - DashboardDashboardUS 08 Cluster - DashboardGlobal Messaging Channels - SMSSMSDashboardEU 01 Cluster - DashboardDashboardUS 04 Cluster - DashboardDashboardID 01 Cluster - DashboardOutbound MessagingUS 04 Cluster - Outbound MessagingDashboardUS 05 Cluster - DashboardData ProcessingUS 04 Cluster - Data ProcessingSDK Data CollectionUS 01 Cluster - SDK Data CollectionSDK Data CollectionUS 05 Cluster - SDK Data CollectionOutbound MessagingUS 06 Cluster - Outbound MessagingOutbound MessagingUS 01 Cluster - Outbound MessagingDashboardEU 02 Cluster - DashboardSDK Data CollectionUS 04 Cluster - SDK Data CollectionDashboardUS 07 Cluster - DashboardOutbound MessagingUS 03 Cluster - Outbound MessagingData ProcessingUS 06 Cluster - Data ProcessingDashboardUS 01 Cluster - DashboardSDK Data CollectionUS 03 Cluster - SDK Data CollectionOutbound MessagingUS 02 Cluster - Outbound MessagingDashboardUS 03 Cluster - DashboardData ProcessingUS 05 Cluster - Data ProcessingAU 01 Cluster - DashboardDashboardOutbound MessagingUS 05 Cluster - Outbound Messaging
Timeline of updates
- identified
Our Engineering team is aware that AWS is experiencing an outage on Monday, October 20, 2025. At the moment, the following services are impacted: Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users Additionally, some customers may experience issues with SSO login due their SSO provider experiencing issues. We are continuing to monitor internal and external services. We apologise for the delay in updating the StatusPage, this was due to the outage also impacting the StatusPage service.
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze Data Processing and Outbound messaging is experiencing elevated latency on the US03 and US05 clusters. This is due to AWS being unable to provide enough capacity. Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users Additionally, some customers may experience issues with SSO login due their SSO provider experiencing issues.
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: - US01 -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users Additionally, some customers may experience issues with SSO login due their SSO provider experiencing issues.
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: - US01 - US02 (Outbound Messaging only) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users Additionally, some customers may experience issues with SSO login due their SSO provider experiencing issues.
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: - US01 - US02 (Outbound Messaging only) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Outbound Messaging only) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Data Processing and Outbound Messaging) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. The SDK Data Collection on the US03 is experiencing a high level of errors. SDK requests will continually retry until SDK collection is back to normal operation.
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Data Processing and Outbound Messaging) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Data Processing and Outbound Messaging) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
Our engineers are continuing to monitor the impact of internal and external services caused by the AWS US East 1 outage. The SDK Data Collection on the US06 is experiencing a high level of errors. SDK requests will continually retry until SDK collection is back to normal operation.
- identified
At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Data Processing and Outbound Messaging) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
At the moment, the following services are impacted: Braze SDK Data Collection, Data Processing and Outbound Messaging is experiencing elevated latency on the following clusters due to AWS capacity issues: -US01 -US02 (Data Processing and Outbound Messaging) -US03 -US04 -US05 -US06 Third-party SMS provider Twilio is affected by this outage. Braze customers may experience the following issues: - Difficulty logging into the Braze dashboard via SMS authentication - Issues sending SMS messages through the Braze platform - Issue receiving SMS responses from end users
- identified
We are starting to see improvements in provisioning capacity from AWS. As we see additional capacity online we are observing small improvements in processing latent jobs. We'll continue to load balance our work to protect system health, as our engineers continue to closely monitor and manage the situation. As more capacity becomes available, when we see a change in our processing latency we'll provide another update.
- identified
We are starting to see improvements in Twilio's service. As Twilio continues to stabilize, we are observing improvements in SMS sending. Customers using SMS authentication are now able to login to the Braze dashboard without issue. Our engineers continue to monitor the situation.
- identified
We are continuing to see improvements processing the backlog of latent jobs across clusters. The US04 and US02 are now fully operational and the backlog has completed processing. SDK Data Collection on the US03 cluster has now stabilised and is returning to normal operation. We'll continue to load balance our work to protect system health, as our engineers continue to closely monitor and manage the situation
- identified
We are continuing to see improvements processing the backlog of latent jobs across clusters. The following services are now fully operational: US01 - Data Processing, SDK Data Processing US03 - Data Processing, SDK Data Processing US06 - Data Processing, SDK Data Processing We'll continue to load balance our work to protect system health, as our engineers continue to closely monitor and manage the situation.
- identified
We are continuing to see improvements processing the backlog of latent jobs across clusters. The following clusters are now fully operational: -US06 -US01 We'll continue to load balance our work to protect system health, as our engineers continue to closely monitor and manage the situation.
- identified
We can confirm the US05 Cluster is now fully operational. The US03 Cluster backlog is continuing to process and engineering team is working to return the cluster to full operation.
- monitoring
The US03 cluster has completed processing the back and is now fully operational. All other clusters are operating within normally operational bounds. Engineers to monitor the stability of Twilio services as they work to recover from the US East 1 outage. We will update further when we have a material update.
- resolved
This incident has been resolved. Twilio services have recovered from the AWS US East 1 outage. Customers can now login to the Braze dashboard via SMS authentication, send SMS messages through the Braze platform, and receive SMS responses from end users without issues. All Braze systems are operating normally. Our engineering teams will continue standard monitoring.
Rewindex changes for this incident
- Major incident: AWS US East 1 outage 2025-10-20 16:21 UTC
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Braze profile · Recent Braze incidents · Markdown · JSON