Projects in tech companies are gigantic

… Projects in tech companies are gigantic. "Impact" is always super hard to quantify. Down at the bottom of the totem pole, you're working on a tiny 0.01% piece of the product. That's my impact?! Not very impressive. Higher up on in management, or off to the side in product management / project management, you're not really physically doing any of the actual product, but are making architectural decisions, serving as tech lead, herding cats, submitting status reports and so on. How do you quantify that? Some people just punt and focus on the product's performance: say [PRODUCT] earned the company [$X] and won [Y] awards. But you're still not quantifying your own impact. I think for the last 10 years of my career at BigTech, I can't possibly quantify my impact in numeric terms because they were such small pieces of gargantuan projects.