how do you keep cloud costs down you know its a pain dont you think

hey everyone, i've been thinking a lot about cloud costs lately, especially as our projects scale. it feels like a constant balancing act between performance, availability, and budget. i'm curious to hear what strategies you all use to keep cloud spending in check without sacrificing critical system needs. are there specific tools, architectural patterns, or even team processes you've found particularly effective? let's share some war stories and best practices