Conversion Century

Conversion Century is a full-service SEO agency founded in 2016 and headquartered in Sofia, Bulgaria. The agency positions itself as a "SEO Muze" for organic growth, emphasizing a white-hat, long-term approach to search optimization. With a team of 10-49 professionals, they handle over 100 projects annually across 42+ industries, serving clients primarily in the United Kingdom and United States. Their Semrush Agency Partners profile shows a strong 4.5 rating, reflecting solid client satisfaction.

The agency's core strength lies in its structured yet flexible methodology. They begin each engagement with thorough research and analysis, identifying the highest-impact SEO opportunities before prioritizing actions and supporting implementation with content, technical recommendations, internal linking, link building, and ongoing performance tracking. This process is designed to be transparent and measurable, with regular communication and clear reporting that helps clients understand the rationale behind each strategy.

What sets Conversion Century apart is their forward-looking approach to AI-driven search. They actively optimize for AI Overviews, answer engines, and LLM-based search experiences by refining content structure, topical authority, internal linking, schema markup, FAQ sections, and entity signals. This positions them well for the evolving search space where traditional rankings are supplemented by generative AI responses.

Their service portfolio is comprehensive, covering technical SEO audits, keyword research, competitor analysis, content strategy and optimization, link building, local SEO, SEO consulting, and monitoring. They also offer specialized services like Shopify SEO, App Store Optimization, and AI Search Optimization. The agency works with small, mid, and enterprise businesses, with project budgets typically ranging from $1,000 to $2,500 and engagements lasting more than six months.

Pricing is project-based, which offers flexibility but may be a limiting factor for large enterprises with bigger budgets. The agency's relatively small team size also means they may not have the capacity for massive-scale campaigns without careful scoping. However, for small to mid-sized businesses in B2B services, ecommerce, and real estate, Conversion Century provides a compelling mix of technical depth, content expertise, and modern AI readiness.

Overall, Conversion Century is a reliable choice for companies seeking a dedicated SEO partner that combines traditional white-hat tactics with emerging AI search optimization. Their collaborative, extension-of-your-team approach and transparent reporting make them particularly suitable for businesses that value clear communication and measurable results. While they may not be the largest agency, their focused expertise and proven track record across multiple industries make them a strong contender for sustainable organic growth.