An SEO team is a set of four capabilities rather than a set of job titles: technical work on the site, content that answers real questions, authority earned from other sites, and measurement honest enough to change the plan. Every organisation covers those four somehow, whether by hiring, by retaining an agency, or by a hybrid where one internal owner directs external specialists. The decision is usually made on budget and then regretted on capability. This page sets out what the four capabilities require, what each staffing model does well and badly, how to size the cost, and how to judge whichever model you end up with.
The four capabilities every SEO team has to cover
Technical work keeps the site crawlable, fast and structurally sensible. Google's starter guide notes that grouping similar topics into directories helps Google understand how often content changes and crawl accordingly, and that a good title is unique to the page, clear, concise and accurately describes its contents. Content is the heaviest and least substitutable capability; the same guide states that creating content people find compelling and useful will likely influence a site's presence in search results more than any other suggestion in it. Authority work earns links, and Google notes that the vast majority of new pages it finds every day are through links, which makes links a crucial resource. Measurement closes the loop, and the guide's caution that some changes take effect in a few hours while others take several months is the reason measurement has to run over quarters rather than weeks. A team missing any one of the four will plateau at the level that capability allows.
In-house, agency or hybrid
An in-house team buys context. Someone who knows the product, the sales objections and the release calendar writes better content and prioritises better than any outsider, and the knowledge stays when a contract ends. It buys that at the cost of breadth, because a single hire rarely covers technical, editorial and outreach work at a senior level, and at the cost of coverage when that person leaves. An agency buys breadth and a bench: several specialists, exposure to many sites, and continuity through staff changes. It costs context, and it introduces a coordination tax that grows with the size of the internal organisation. The hybrid, one accountable internal owner directing external specialists, is the model most mid-sized organisations converge on, because the scarce thing is not execution capacity but someone internally who can say no to the wrong work.
Sizing the cost honestly
Compare a retainer against fully loaded salary rather than against base pay, because employer costs, tooling, recruitment and management time are real. For a reference point on the senior end of marketing hiring, the Bureau of Labor Statistics puts the median annual wage for advertising, promotions and marketing managers at $159,660 in 2024, with about 434,000 jobs and roughly 36,400 openings projected each year over the decade; those managers plan campaigns, work with staff on budgets, contracts, creative vision and media buying, and evaluate the look and feel of websites and campaigns. That is the market you compete in for an internal lead. Against that, a mid-sized retainer often buys a share of several specialists rather than one person's full attention, which is the trade being made. Ask an agency who works the account, at what seniority, and for how many hours, then compare like with like.
Judging whichever team you choose
Google's hiring guidance applies to internal candidates as much as to agencies: ask for examples of previous work and success stories, ask what results they expect and in what timeframe, ask about experience in your industry, and ask how changes will be communicated. Google is explicit that no one can guarantee a #1 ranking, so a candidate or agency promising positions is failing the interview. Set reporting on the chain from impressions to qualified enquiries, not on rankings alone. And apply Google's people-first questions to the output: is it self-evident who authored the content, does it provide substantial value compared with other pages in results, and is it the sort of page a reader would bookmark or recommend. A team that can answer yes to those has the capability; a team producing volume that fails them has the headcount without it.
Questions people ask about seo team
How many people does an SEO team need?
Fewer than the four capabilities suggest, if the site is small and the content load is light. What matters is that technical, content, authority and measurement are each owned by someone competent, whether that is one internal lead plus specialists or a retained agency bench.
Is an agency cheaper than hiring in-house?
Compare against fully loaded cost, not base salary. A retainer often buys a share of several specialists rather than one full-time person, which is cheaper for breadth and more expensive per hour for depth. Ask who works the account and at what seniority.
What should we keep in-house if we outsource?
Ownership of the strategy, the accounts and the analytics, plus one accountable person who can prioritise and refuse work that does not fit. The scarce capability in most organisations is judgement about what not to build, not execution capacity.
How long before a new SEO team shows results?
Google's starter guide says some changes take effect in a few hours while others can take several months, and suggests waiting a few weeks before judging any single change. Set quarterly expectations, and judge a team on the quality of decisions in the first quarter, not on rankings.