Many functions on Osram's Lightify app will stop working once its cloud servers power down, but you'll still be able to use Lightify devices with a third-party Zigbee hub.
Lightify Gateway API integration - #44 by cybrmage - 🚧 Developers - Hubitat
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OSRAM LIGHTIFY A19 Smart Adjustable White LED, Dimmable, 9.5W, Hub Required : Everything Else
Osram Lightify Bulb turns on randomly · Issue #210 · dresden-elektronik/deconz-rest-plugin · GitHub
Osram is shutting down the Lightify service
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Sylvania 73692 Wireless Gateway, H X 2.4 in W, Connected, White
Osram Lightify no longer supported? - General Discussion - SmartThings Community
Question about if wyze goes out of business - Watercooler - Wyze Forum
Osram Lightify Bulb turns on randomly · Issue #210 · dresden-elektronik/deconz-rest-plugin · GitHub
Review: OSRAM LIGHTIFY Smart Connected Lighting System
Osram Lightify Smart Home Connected LED Light Bulb E27-9,5W/60W-Replacement/Dimmable/Warm White to Day Light 2700 K - 6500 K : : Lighting