Backlinks matter because they serve two core functions: discoverability and credibility assessment. Search engines crawl the web by following links, so a backlink from an indexed page helps search engines find and index your content faster. Without links pointing to a new page, Google may take weeks or months to discover it organically, if at all. The credibility piece is where most of the ranking impact lives. When another site editorially links to your page, that link acts as a reference or citation. If multiple credible sources in your topic area link to your content, search engines interpret that as a signal that your page provides value worth surfacing. The key word is editorially relevant. A backlink from a financial regulator's resource page carries different weight than a purchased sidebar link on an unrelated blog. Relevance, context, and the linking site's own authority all factor in. Backlinks also drive referral traffic. A well-placed link on a popular industry blog or news site can send qualified visitors who are already interested in your topic. That traffic often converts better than cold search traffic because it arrives with context and intent. Useful resources, original evidence, and relevant expert contributions can give publishers and partners a genuine editorial reason to link. Avoid bulk directory submissions and paid placements intended to manipulate rankings because they can waste resources and conflict with Google's spam policies. Watch out for link schemes. Google's spam policies identify link spam practices such as buying or selling links for ranking purposes, excessive link exchanges, and automated link creation. A few editorially earned backlinks from trusted sources outperform dozens of low-quality placements. Quality, relevance, and editorial context determine whether a backlink helps or hurts.