Criteria and Deliverables From a Search Engine Marketing Agency

Choosing an Organic SEO Agency: Your 2026 Guide to Selecting the Right SEO and GEO Partner

If you want a complete overview first, start with our main article on choosing a search engine marketing agency. Here, we zoom in on how to select an organic SEO agency in 2026, whilst factoring in the new GEO (Generative Engine Optimisation) challenges linked to AI-powered search engines and assistants.

The aim is not to explore a particular specialism (local, international, e-commerce, etc.), but to give you a decision-making method: what to compare, which questions to ask, which deliverables to require, and how to secure measurement (SEO + GEO) without unrealistic promises.

Clarify Your Needs Before Comparing Agencies

Business goals, scope and constraints (site, CMS, markets, languages)

Before you start conversations, capture a one-page "scope of work". Without it, you will end up comparing proposals that are not comparable (different scopes, workloads and priorities).

• Primary objective: acquisition (leads), e-commerce (revenue), awareness (share of voice), reducing reliance on paid media, launching a new offer…
• Scope: domain(s), subdomains, estimated number of URLs, key templates (products, categories, solution pages, blog, local pages), existing blog content to optimise.
• Technical constraints: CMS, JavaScript rendering, available dev capacity, release frequency, legal constraints (GDPR, regulated sectors), brand approvals.
• Markets and languages: geographies, multilingual needs, local variations (terminology, local pages, logistics).
• Timelines: migration/redesign, product launch, seasonal peaks.

This framing also helps you assess provider maturity: a good agency will clarify grey areas (access, data, dependencies) rather than quoting based on guesswork.

SEO vs GEO: what changes in expectations, content and deliverables

In 2026, you are no longer optimising only for traditional results pages. User journeys increasingly include generative answers (AI Overviews, AI assistants), with more zero-click searches. According to Semrush (2025), 60% of searches end without a click.

As a result, expectations of an SEO agency broaden. Beyond rankings, you should assess its ability to:

• Structure information for "cite-ability" (short definitions, lists, tables, consistent heading hierarchy). According to State of AI Search (2025), a clear H1-H2-H3 structure increases the chances of being cited by an AI system by 2.8×.
• Publish and maintain fresh content: Squid Impact (2025) reports that 79% of AI bots favour content from the last two years.
• Measure GEO visibility (citations, sources, topic coverage) alongside classic SEO KPIs.

Key point: GEO and SEO are not in opposition. Squid Impact (2025) highlights that 99% of AI Overviews cite the organic top 10: SEO remains the foundation, whilst GEO is an additional optimisation and measurement layer.

KPIs and ROI: visibility, leads, conversions and impact measurement

A serious provider should propose a measurement framework before execution. This is especially important because visibility does not always translate into clicks (zero-click, AI answers, enriched SERPs).

• SEO: impressions, clicks, CTR, rankings, landing pages, conversions (Google Analytics) and technical signals (indexing, Core Web Vitals).
• GEO: citations, mention frequency, source diversity, topic coverage, answer consistency (brand alignment, accuracy).
• ROI: connect costs, incremental gains and time horizon. Our SEO statistics show ROI typically increases over time: 0.8× at 6 months, 2.6× at 12 months, 3.8× at 18 months, 4.6× at 24 months, 5.2× beyond 36 months (panel of 80 US e-commerce sites, January 2022 to March 2025).

To frame your calculation, you can use our dedicated resource on SEO ROI (method, worked example, and parameters you should not overlook).

Understand the Fundamentals Before You Decide

What are the two types of search marketing?

In practice, most teams distinguish between:

• Organic search (SEO): organic visibility through technical optimisation, content and authority.
• Paid search (SEA): immediate visibility through sponsored ads. If you need to clarify this scope in your tender, see our article on paid search.

In B2B, the distinction matters: SEO compounds over time, whereas paid search stops when the budget stops.

What are the three main categories of search visibility?

A web search marketing agency may cover three main areas, often framed as SEO, SEA and social visibility (SMO). This structure helps organise governance: who owns what, which metrics apply, and how teams interface.

In this article, we stay focused on organic (SEO) and its GEO extension.

What are the three pillars of SEO?

Most agencies structure diagnostics and recommendations around three pillars:

• Content (semantics): search intent, information architecture, quality, structure (titles, headings, useful data).
• Technical: indexing, performance, HTTPS, mobile friendliness, template quality.
• Authority (link building): inbound links, credibility and distribution.

This breakdown helps you check that the provider is not selling "content" without addressing indexing, or "link building" without an editorial strategy.

Agency Types and Collaboration Options

Overview: generalist, specialist, local or international agencies

To choose well, avoid asking "which is the best agency?" (too vague). Ask instead: "which type of agency fits my constraints and organisation?"

• Generalist: useful if you want a broad steering role (SEO, sometimes paid search and social) and cross-channel coordination.
• Specialist: relevant when your context requires depth (covered in dedicated articles).
• Local: valuable if your teams need frequent workshops and whiteboard-style alignment.
• International: suited to multilingual, multi-country needs and more complex governance.

A practical decision criterion is your ability to execute. If you have dev and content capacity, you may favour an agency focused on strategy and QA. If you lack bandwidth, look for a partner that can produce, orchestrate and document clearly.

Agency vs freelance consultant: service level, continuity and accountability

This choice is not simply "cheaper vs more expensive". It comes down to continuity, skill coverage and operational risk.

• Freelance consultant: direct relationship, highly agile, very effective on a clearly defined scope. Common limitation: reliance on one person (availability, ability to industrialise delivery).
• Agency: access to multiple profiles (technical, content, authority, sometimes UX). Advantage: capacity to absorb peaks (migration, large backlog) and to secure deliverables that several teams can use.

Your key interview question: "Who is accountable for what, and how do you ensure continuity over 12 months?"

Services: What You Should Require From an SEO/GEO Partner

Which services can an agency provide based on your maturity?

At a minimum, expect a clear loop: diagnosis → prioritisation → execution → quality assurance → measurement → iteration. Services may include:

• SEO audit and a prioritised roadmap.
• Content strategy (intent, clusters, internal linking).
• Technical optimisation (indexing, performance, templates).
• Link building (acquisition framework and QA).
• Reporting, rituals and ROI management.
• GEO extension: "citable" formats, tracking visibility in AI answers.

Initial audit and prioritisation: diagnosis, opportunities and risks

Require an audit that leads to executable decisions, not a generic checklist. A useful audit combines:

• Findings (crawl, indexing, performance, content, authority).
• Evidence (Google Search Console and Analytics extracts, examples of URLs and templates).
• A prioritised roadmap (impact/effort/risk, acceptance criteria).

A helpful benchmark: according to HubSpot (2026), Google relies on 200+ ranking factors. Without prioritisation, you end up with an unworkable list of actions.

To frame this deliverable, you can read our article on the SEO & GEO audit and explore the 360 SEO & GEO audit module to industrialise analysis, prioritisation and tracking.

Editorial strategy and planning: intent, briefs, internal linking and calendar

Your challenge is not simply to "write content", but to publish the right content, in the right order, with a structure that performs in SEO and GEO.

• Intent-to-page mapping: one page, one dominant intent (reduces cannibalisation).
• Actionable briefs: angle, outline, proof points to include, internal links expected, legal constraints.
• Calendar: realistic cadence, dev dependencies, approval cycles.

Our SEO statistics indicate that articles longer than 2,000 words earn +77.2% more backlinks (Webnyxt, 2026). Data like this should inform strategy: which pillar pieces justify long-form effort, and which should stay shorter.

Technical optimisation and performance: minimum requirements and QA

Ask for a clear technical "definition of done": what is considered delivered, how it is tested, and how side effects are avoided.

• Indexing: crawlable pages, consistent canonicals, controlled redirects.
• Performance: Core Web Vitals and load times. Google (2025) states that 40% to 53% of visitors leave a site if it loads too slowly.
• QA: before/after validation, sampling across templates, post-release monitoring.

Authority and link building: acquisition framework, validation and tracking

Link building should be framed as a process, not as "buying links". Ask for:

• Selection criteria (relevance, quality, risk).
• Validation process (who approves, how often, and with what reporting).
• Impact tracking (relationship to rankings/pages, not just volume).

Backlinko (2026) reports that 94% to 95% of web pages have no backlinks, and that the number 1 ranking page averages 220 backlinks. These benchmarks help set realistic expectations: without authority, some markets remain hard even with strong content.

GEO: structuring content to appear in LLM answers

GEO is largely about readability and reusability.

• Add short definitions, lists, tables and direct answers.
• Document data properly: assumptions, scope, year and source (never invent figures).
• Plan content refresh cycles. According to Squid Impact (2025), AI bots strongly favour recent content.

To go deeper on trends, see our GEO statistics (market, CTR, impact of AI Overviews, adoption, metrics).

Reporting and steering: cadence, granularity, decisions and iteration

An agency should propose a rhythm, format and level of detail that match your organisation. In 2026, running on intuition alone is risky: SEO.com (2026) mentions 500 to 600 Google algorithm updates per year, which requires an iteration mindset.

Require reporting that supports decisions:

• What is improving (and why)?
• What is flatlining?
• Which actions have been delivered, tested and validated?
• What is the next focus (impact/effort/risk)?

Expected deliverables: roadmap, backlog, briefs, dashboards and meeting notes

Here is a deliverables checklist you can require (adapt to your maturity):

• 90-day roadmap (workstreams, priorities, dependencies).
• Prioritised backlog (impact/effort/risk, owner, status).
• Briefs (intent, heading plan, proof points, internal linking, quality criteria).
• Dashboards (Search Console, Analytics, GEO visibility).
• Meeting notes (decisions, trade-offs, actions, risks).

Selection Process and Tendering: A Decision Method

Specification: the minimum to share to receive a realistic proposal

Without producing a heavy document, share at least:

• Business objectives and success KPIs (SEO + GEO).
• Scope (domains, markets, languages, estimate of templates/URLs).
• Context (migration/redesign history, approval constraints, internal resourcing).
• Possible access (read-only Search Console and Analytics, security constraints).
• Timelines and milestones.

Shortlist and scoring matrix: expertise, method, transparency, capacity and timelines

Create a simple scoring matrix (e.g. /5 per criterion), then ask stakeholders (marketing, product, dev, leadership) to complete it.

• Method: prioritisation, evidence, QA, iteration.
• Transparency: data, assumptions, limits, risks.
• Capacity: seniority, availability, continuity.
• Deliverables: operational usefulness, clarity, documentation.
• Fit: governance, cadence, communication.

Questions to ask in interviews: organisation, QA, risks and dependencies

• "How do you prioritise: which data, which criteria, which trade-offs?"
• "How do you avoid generic recommendations?"
• "What is your QA process (technical and content)?"
• "Which client-side dependencies exist (dev, approvals, legal), and how do you manage them?"
• "Which risks do you see in our context, and how do you mitigate them?"

Compatibility check: governance, communication, approvals and RACI

Agree a RACI (Responsible, Accountable, Consulted, Informed) from the start. Many failures come from an "audit delivered" that lands in a backlog with no owner.

Also confirm: a single request channel, meeting cadence, deliverable formats, and how changes are documented.

How a tender typically runs: steps, timeline, presentations, negotiation and kick-off

1. Internal alignment (needs, scope, KPIs, constraints).
2. Send the brief (same information to everyone).
3. Q&A (short window, shared answers).
4. Proposal submission (expected format).
5. Presentation (practical case, prioritisation, risks).
6. Negotiation (scope, governance, deliverables, exit plan).
7. Kick-off (access, initial audit, 90-day roadmap).

How to assess proposals: assumptions, action plan, risks and priorities

Do not compare price alone. Compare assumptions (content volume, level of dev support, link-building pace, governance). A cheaper quote can be based on unrealistic client-side assumptions.

Also look for guardrails: limits, risks, dependencies and how the plan gets reviewed over time.

Budgets, Pricing Models, Contract Types and Performance Commitments

Cost drivers: site size, competition, objectives and countries

Costs vary mainly with:

• Size (number of URLs, templates, volume).
• Technical complexity (templates, JavaScript, migrations, international set-ups).
• Competition level (authority required, publishing intensity).
• Ambition (keyword scope, top 3 goals, multi-country targets).
• Expected pace (quick wins vs foundational work).

To set expectations, an annual SEO budget example (audit + content + link building + technical + reporting) can reach €24,000 in a detailed scenario (for instance, 24 articles at €500 and 15 backlinks), then pay for itself if traffic and conversion improve (see the worked example in our ROI resource).

Pricing models: retainer, time and materials, one-off projects, per deliverable

• Monthly retainer: suitable for ongoing steering (iteration, reporting, content).
• Time and materials: useful with a changing backlog, but requires strict governance.
• One-off project: audit/migration/redesign with defined deliverables.
• Per deliverable: useful when you know exactly what you need (and how you will validate it).

Breaking down a quote: hours, deliverables, management, production and follow-up

Ask for a clear breakdown:

• Discovery and audit time.
• Production (briefs, content, optimisation).
• Management (project lead, meetings, coordination).
• Link building (framework, selection, tracking).
• Reporting (dashboards, analysis, recommendations).

Without this transparency, you cannot arbitrate (reduce scope, increase cadence, etc.).

Which contract types are most common?

You will most often see: monthly retainer, time and materials (day rate), one-off project (audit, migration), or a hybrid (initial audit + monthly support).

Contract essentials: duration, scope, exit plan and ownership of deliverables

Key points to secure in writing:

• Term and renewal terms.
• Scope (what is included/excluded).
• Ownership of deliverables (audits, briefs, dashboards, content).
• Exit plan: how you recover deliverables, documentation and history.

Best-efforts vs results guarantees: what is realistic and red flags

Search visibility depends on uncontrollable factors (competition, updates, enriched SERPs). A best-efforts commitment (method, deliverables, cadence, QA, reporting) is generally more realistic than a firm ranking guarantee.

Red flags:

• "Guaranteed number 1 ranking" promises without analysing your context.
• No measurement plan (Search Console, Analytics, GEO).
• Non-actionable deliverables (no evidence, no prioritisation, no acceptance criteria).

SLAs, confidentiality, data access and permissions

In B2B, address this early:

• SLAs (response times, meeting cadence, delivery timelines).
• Confidentiality and data processing.
• Access management (least privilege, audit trail, read-only access to Search Console and Analytics where possible).

How to Evaluate Results After Choosing a Provider

SEO indicators: impressions, rankings, clicks, landing pages and conversions

Do not track rankings alone. Combine:

• Impressions (visibility), CTR (promise), clicks (acquisition).
• Landing pages and their role (informational, commercial, transactional).
• Conversions and assisted conversions (Google Analytics).

Backlinko (2026) shows position 1 captures 27.6% of clicks, position 2 15.8%, and position 3 11.0%: moving a few places near the top 3 can multiply traffic.

GEO indicators: citations, sources, topic coverage and consistency

For GEO, measure:

• Share of citations (how often your brand appears in answers).
• Mention quality (accuracy, message alignment, compliance).
• Source diversity (owned site, third-party content, community content).
• Topic coverage (are you cited on strategic topics or only peripheral ones?).

Attribution and ROI: connecting visibility, pipeline and revenue

The useful question is not "did we gain rankings?" but "what did it change for the business?" Connect:

• Pages gaining visibility (Search Console).
• Pages that engage and convert (Analytics).
• Costs (fees, content, technical work, link building) and incremental gains (revenue, qualified leads, pipeline).

When to iterate vs when to redesign: thresholds and early signals

Set simple thresholds:

• Low CTR despite strong ranking: title/meta issue, intent mismatch, overly enriched SERP.
• Impressions rising but clicks flat: zero-click/AI Overviews effect, need for GEO optimisation.
• Traffic up but conversions down: overly informational targeting, commercial pages need strengthening, UX friction.

According to Ahrefs (2025), page 2 captures only 0.78% of clicks: if a page is stuck in positions 11 to 20, a consolidation effort (content + internal linking + authority) may be a priority.

Mistakes to Avoid When Choosing an Agency

Choosing on price alone or on ranking promises

Price says nothing about method or execution quality. And "guaranteed" promises without clear conditions often hide a lack of data-led steering.

Approving a strategy without governance or an execution plan

Without RACI, a timetable and approval rules, you get deliverables that are never deployed. This is one of the most common reasons "SEO doesn't work".

Underestimating deliverable quality, traceability and documentation

Insist on evidence, priorities, acceptance criteria and documentation that multiple teams can use (marketing, content, dev).

Forgetting brand alignment, compliance and reputational risk

In SEO and GEO alike, approximate content can become a reputational risk (and in AI environments, it can spread quickly). Set rules for sources, review, compliance, exclusions and refresh policy.

Incremys Resources to Frame Your SEO and GEO Strategy

When to work with an agency and how to structure steering with Incremys

If you are looking for an "agency + tooling" set-up to industrialise execution and steering, you can rely on the Incremys SEO & GEO agency (tailored support).

Depending on your level of autonomy, a hybrid model often works well: an agency for framing, strategy, QA and critical phases (audit, migration, relaunch), and a platform to structure briefs, production, tracking and measurement over time. For a broader view, see Incremys.

To explore other angles linked to the main topic, you can also read: SEO, GEO and link-building agency, the Google SEO agency angle, the web SEO agency angle, or the article on a webmarketing agency. Finally, if you are comparing lists, our guide to the best SEO agency can help you interpret the SERP. And for a strict focus on organic SEO, a dedicated resource covers SEO specifics.

To round things off, you can also consult our page dedicated to choosing a search engine marketing agency (definition, scope, services and selection criteria).

Frequently Asked Questions About Choosing an Agency

How do I choose an organic SEO agency suited to my industry?

Start from your context (sales cycle, regulation, seasonality, competition) and require a proposal that makes assumptions, risks and priorities explicit. A strong agency will restate your need and propose a testable roadmap rather than a standard "package".

Which services are essential from day one?

An actionable audit (evidence + prioritisation), a 90-day roadmap, a measurement framework (Search Console + Analytics + GEO KPIs), and steering rituals. Without these foundations, execution becomes scattered.

Which agency type should I prioritise: generalist, specialist, local or international?

Choose based on (1) organisational constraints (workshops, languages, coordination), (2) your internal execution capacity, and (3) site complexity. An international agency only adds value if it provides robust multi-country governance.

What is the difference between an agency and a freelance consultant?

A freelancer offers a direct relationship and high agility on a well-defined scope. An agency typically provides stronger continuity and broader skill coverage, which helps when you need to deliver across pillars (technical, content, authority) at a steady pace.

What budget and timeframe should I plan for measurable results?

Budget depends on the site, competition and cadence. For ROI, our SEO statistics often show momentum building between 6 and 18 months (e.g. 0.8× at 6 months, 2.6× at 12 months, 3.8× at 18 months), which supports long-term steering rather than a one-off project.

Which contract types are most common, and what should they include?

Monthly retainer, time and materials, one-off projects, or a hybrid. Always include scope, deliverables, governance, exit plan, deliverable ownership, data access rules and acceptance criteria.

How should I interpret performance commitments without falling for unrealistic promises?

Prioritise commitments on method, cadence, deliverable quality, measurement and iteration. Be cautious with ranking guarantees without conditions, given algorithms change continuously.

How does the selection and tender process typically work?

Internal framing → shared brief → Q&A → proposals → presentations → negotiation → kick-off (access + audit + roadmap). Use a scoring matrix to keep the decision objective.

Which deliverables should I require in the first 30 days?

An evidence-backed audit, a prioritised backlog, a 90-day roadmap, a content plan (intents + briefs), a technical plan (quick wins + workstreams), and an initial dashboard (SEO + GEO).

How do I evaluate results beyond keyword rankings?

Connect visibility (impressions), acquisition (clicks/CTR), behaviour (engagement) and business impact (leads/revenue). Add GEO metrics (citations, AI share of voice) to cover zero-click journeys.

What mistakes should I avoid when choosing an SEO/GEO partner?

Choosing on price, accepting ranking promises, approving without governance, neglecting deliverable traceability, and ignoring brand/compliance risks (amplified in AI environments).

Which access and data should you retain (Search Console, Analytics, content)?

Retain ownership and admin rights for Google Search Console and Google Analytics, as well as access to content (CMS, documents, briefs). The agency should work with controlled permissions, ideally read-only where possible, with clear traceability.

How do you integrate GEO into the strategy without cannibalising SEO?

Start with SEO (indexing, content, authority), then add a GEO layer: structured formats, direct answers, sourced data, refresh cycles and citation measurement. GEO complements SEO; it does not replace it.