Modern SEO has evolved beyond keywords and links to focus on brand trust and authority. Research shows that trust—not just clever optimization—drives search success. Google’s recent algorithms prioritize entities and brand signals (like Knowledge Panels and branded search traffic) over low-quality content. This report explores the evolution of SEO, explains why search engines reward recognized brands, and details how algorithm updates filter for trust and expertise. We define digital brand equity and review key signals (backlinks, brand mentions, author reputation, structured data, Knowledge Panels). Through examples (HubSpot, Forbes Advisor, HouseFresh), we analyze how strong brands fared in recent core updates. Finally, we outline a practical playbook and KPI framework (e.g., GSC branded queries, GA4 engagement, SEMrush metrics, Google Business Profile signals) to help SMEs build resilient brand equity online.