Pillar pages vs supporting articles
A pillar page targets a broad, high-volume keyword (e.g. "email marketing"). It's long (3000+ words), comprehensive, and serves as the hub for a topic.
Supporting articles target specific long-tail variations (e.g. "best email marketing software for small business," "email open rate benchmarks 2026"). Each is 1000-2000 words, links up to the pillar, and the pillar links down to it.
This structure tells Google you're an authority on the broad topic. Without it, individual articles fight for rankings alone and lose to sites with proper topical structure.