The Evolving SRE Engagement Model Written by Acacio Cruz and Ashish Bhambhani Edited by Betsy Beyer and Tim Harvey SRE Engagement: What, How, and Why We've discussed in most of the rest of this book what happens when SRE is already in charge of a service. Few services begin their lifecycle enjoying SRE support, so there needs to be a process for evaluating a service, making sure that it merits SRE