Basic SEO activities can be managed internally, particularly if the company has sufficient technical, content and analytics resources.
However, competitive SEO normally requires ongoing expertise across technical SEO, content, authority building, keyword research, performance analysis and search engine developments.
This now extends beyond traditional search, as AI systems and LLMs increasingly rely on authority, trust and relevance signals when surfacing content.
An agency can provide additional resources, specialist tools and an external strategic view, while also working alongside the client’s internal marketing, development and compliance teams.
