Marketing doesn't work in a vacuum. An agency that offers a range of capabilities (SEO, PPC, content, social, web development) can create a cohesive strategy. That said, every agency has strengths. Determine whether their specialization aligns with your highest-priority needs—whether that's paid media, local SEO, content marketing, or full-funnel strategy.
You may think you only need blog content, but an audit might reveal your real issue is that existing content isn't SEO-friendly. A versatile agency can address root causes.