# Klaviyo: AWS Incident affecting components of Klaviyo application

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-12-07 18:18 UTC · Resolved: 2021-12-08 15:00 UTC · Duration: 21 h
- Updates: 1
- [Vendor status page: https://status.klaviyo.com/incidents/j8f0qp9rjv0d](https://status.klaviyo.com/incidents/j8f0qp9rjv0d)
- [Company: Klaviyo](https://rewindex.com/company/klaviyo.md)

## Part of an outage event

- [AWS us-east-1 outage, Dec 7, 2021: 71 vendors, 77 incidents](https://rewindex.com/events/2021-12-07-aws-us-east-1)
- This incident blames AWS as the cause. (hop 1, posted +2 h 28 min vs the first vendor naming AWS)
- Evidence: “…AWS Incident affecting components of Klaviyo application As of 11:35 pm US Eastern on Tuesday December 7, all form metrics are processing successfully. All issues arising from the AWS incident have su…”

```mermaid
flowchart LR
  root["AWS us-east-1<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>11 vendors, 9 blamed AWS<br/>Aptible, Firebolt, Honeycomb +8"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>16 vendors, 12 blamed AWS<br/>Maven Central, Pusher, Confluent +13"]:::blames
  root --> h4
  later["Later<br/>3 vendors, 2 blamed AWS<br/>Segment, Confluent, Doppler"]:::blames
  root --> later
  me["Klaviyo (this incident)<br/>posted +2 h 28 min"]:::me
  h4 --- me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

## Timeline of updates

- **resolved** 2021-12-08 15:00 UTC: As of 11:35 pm US Eastern on Tuesday December 7, all form metrics are processing successfully. All issues arising from the AWS incident have subsided and this incident is resolved.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._


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Canonical: https://rewindex.com/company/klaviyo/incidents/j8f0qp9rjv0d · Markdown: https://rewindex.com/company/klaviyo/incidents/j8f0qp9rjv0d.md · JSON: https://rewindex.com/api/v1/companies/klaviyo/incidents/j8f0qp9rjv0d · Generated 2026-10-20T00:53:20.049Z