Most paid search engine marketing campaigns bleed budget in the first 30 days — not because the strategy is wrong, but because the setup is. This guide breaks down exactly how paid search SEM works in 2026, from campaign structure and keyword targeting to bid strategy and landing page optimization. Whether you are running your first paid SEM campaign or auditing an existing account that is not delivering, you will find actionable steps here that work in real accounts today. No recycled theory. No generic advice. Just a clear framework for making every click count.