I have 3 27" 4k monitors that I use for my work, as a programmer. I used the Power Toys utility to create snap zones to contain my usual apps. I like to have my main code window take up the entire center monitor plus half of each of the “wing” monitors, then I can use tabs to view 5 or 6 code files at once. The remaining space on the far right is for work IM, and the far left is used for Firefox and discord.
if you’re not testing in production, you’re not testing production