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GOODWILL
12 Months Ended
Oct. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL GOODWILL
The following table presents the goodwill allocated to Ciena’s operating segments as of October 30, 2021 and October 31, 2020, as well as the changes to goodwill during fiscal 2021 (in thousands):
Balance at October 31, 2020AcquisitionsImpairmentsTranslationBalance at October 30, 2021
Platform Software and Services$156,191 $— $— $— $156,191 
Blue Planet Automation Software and Services89,049 — — — 89,049 
Networking Platforms65,607 — — 798 66,405 
Total$310,847 $— $— $798 $311,645