Are there any stories you're willing to share, any tough nuts you've had to crack to improve some aspect of operations, whether it be reliability, performance,

Are there any stories you're willing to share, any tough nuts you've had to crack to improve some aspect of operations, whether it be reliability, performance, bot detection evasion, or something else completely? I've only dealt with scraping on a small scale and I quickly realized that running "browsers as a service" is a pain in the ass, they're not exactly lightweight, they like to get "stuck", balloon in memory or some such. I imagine your business will be quite successful if reliability is good and the price is right!