Impression Share: What It Is, Key Features, Benefits, Use Cases, and How It Fits in SEM / Paid Search
Impression Share is one of the most useful visibility metrics in **Paid Marketing** because it answers a simple question: *How often did your ads show when they were eligible to show?* In **SEM / Paid Search**, where auctions happen in milliseconds and competitors can change bids hourly, this visibility context is often the difference between “performance looks fine” and “we’re leaving growth on the table.”