What keyword match type gives Smart Bidding the most data and flexibility to compete in the right auctions?

Broad match gives Smart Bidding the most data and flexibility because it allows ads to show for the widest range of related searches, including misspellings, synonyms, and other relevant variations. This broad reach provides Smart Bidding algorithms with more opportunities to learn and optimize for conversions. Phrase match is more restrictive, requiring the exact phrase or close variations. Exact match is the most restrictive, showing ads only for searches that are identical or very close to the keyword. Negative match prevents ads from showing for specified terms, which is important for refining targeting but doesn't provide data for new opportunities.