z-score

Z-score in data science is also known as standardization score. Z-score is the number of standard deviations that a sample is above or below the mean of all values in the sample.

zerto

Zerto is a software development and cloud service provider company offering Disaster Recovery As A Service (DRaaS) solutions. They also offer a Disaster Recovery (DR) technical term dictionary at https://www.zerto.com/resources/a-to-zerto/.