Helpful Content is content created primarily to help users accomplish a goal rather than to manipulate search rankings.
It matters because organic search compounds over time when pages are technically accessible, useful, differentiated, and connected to real search intent. Clear SEO terminology also helps teams avoid shortcuts that create long-term risk.
Example
A cost guide can explain assumptions, tradeoffs and what is excluded from an estimate. Those details help a reader make a decision, whereas repeating the target phrase in additional paragraphs adds length without resolving another question.