How Staging Environments Stop Client-Facing Hosting Mishaps and Give You Reliable Multi-Site Performance Results
https://high-wiki.win/index.php/How_a_$750K_WordPress_Agency_Broke_SLA_with_Apache_and_Fixed_It_by_Switching_to_LiteSpeed
Why agencies still ship performance problems to clients You've had that sinking feeling: the site looked fine on your laptop, but once it's live on the client's domain pages take forever to load, images break, or a multisite mapping fails