When WordPress Updates Break a Week of Billable Work: Anna's Story

https://star-wiki.win/index.php/Why_some_staging_environments_don%E2%80%99t_break_WordPress_plugins_%E2%80%94_and_how_to_build_one_that_actually_protects_your_site

Anna ran a small web design agency with a tight team and about 30 ongoing WordPress client sites. For three years she had been able to turn around projects fast, keep clients happy, and pay her small crew without running at a loss