In a topic cluster strategy, cluster articles should link to:

In a topic cluster strategy, cluster articles should link to the pillar page and other related cluster articles. This internal linking structure is crucial for SEO. Linking to the pillar page reinforces its authority on the broad topic and helps search engines understand the relationship between the content. Linking to other related cluster articles further strengthens the topical relevance of the cluster as a whole, demonstrating comprehensive coverage of the subject matter. Linking only to external authoritative sources is insufficient as it doesn't build internal authority. Linking only to the main pillar page misses an opportunity to connect related subtopics. Avoiding links entirely would hinder the flow of authority and user navigation, diminishing the SEO value of the cluster.