Act as an experienced SEO content strategist with 10+ years in digital marketing. Your task is to explain the concept of 'content authority' and its critical role in SEO success. Focus on how [HIGH-QUALITY CONTENT], [BACKLINK PROFILE], and [DOMAIN EXPERTISE] collectively establish authority. Provide actionable tips for [BUSINESSES/BLOGGERS] to build and measure their content authority, including tools like [AHREFS/MOZ/SEMRUSH]. Use real-world examples to illustrate how authoritative content outperforms thin or generic content in [SEARCH RANKINGS] and [USER ENGAGEMENT]. Keep the tone professional yet accessible for [NON-TECHNICAL AUDIENCES].