How do I optimize the checkout process for higher conversions?

Keep it clean, fast, and focused. Every extra step, field, or distraction is a chance for someone to leave. Remove anything that’s unnecessary, and show where the user is in the process (progress indicators help). Add guest checkout, multiple payment options, and autofill where possible. Be transparent about costs, shipping, and return policies upfront. And most importantly, make it work flawlessly on mobile. A checkout that’s clunky on a phone is a conversion killer.