In a business context, YC usually refers to Y Combinator, a well-known startup accelerator based in Silicon Valley.

• What it is: Y Combinator invests in very early-stage companies, provides mentorship, and helps them grow quickly.

• How it works: Selected startups receive seed funding (often around $500,000), advice from experienced entrepreneurs, and access to a large network of investors.

• Famous examples: Companies like Airbnb, Dropbox, Stripe, and Reddit went through YC’s program.