https://www.rudderstack.com/docs/destinations/streaming-destinations/klaviyo/cloud-mode/old-api/
Klaviyo Cloud Mode Integration (Old API) | RudderStack Docs
Send events to Klaviyo via RudderStack cloud mode using the old API (v2023-02-22).
cloud modeold apiklaviyointegrationrudderstack
https://support.atlassian.com/opsgenie/docs/effects-of-deprecating-the-old-api/
Effects of deprecating the old API | Opsgenie | Atlassian Support
Find out which Opsgenie integrations still use the deprecated API v1 instead of REST API.
old apiatlassian supporteffectsdeprecatingopsgenie