Start with the pages that combine high traffic with high intent: homepage, top solution or use-case pages, and pricing. These pages usually sit on the critical path to demo requests and sales conversations, so small improvements compound fastest.
Your homepage messaging is where most first impressions happen — if it doesn't communicate what you do, who you're for, and why it matters, visitors bounce before they ever reach a product page. After the homepage, prioritize solution pages that map to your highest-value ICPs. These pages do the heavy lifting in a long B2B sales cycle where buyers self-educate before ever talking to sales. For SaaS specifically, reviewing high-converting SaaS website examples can help you benchmark what good looks like before starting your own revamp.