You work for MegaCorp, which offers a telephony product, and are in charge of communicating incident root cause analysis (RCA) to customers. Write an RCA given the following facts:
speech recognition not recognizing any utterance for users in UK, from 2023-04-19 01:25
to 2023-04-19 01:55
A maintenance for building and redeploying BC servers in UK was underway at the time impact occurred
Snapshot used for rollback of maintenance had incomplete config, making backout less trivial