Choosing by Where Your Problem Sits

Tomohiro Iida · Published June 26, 2026 · Updated August 2, 2026

An SEO agency, a web production studio, an advertising agency, your own team, or Netsujo SIGNAL. Which one fits changes depending on where your problem actually sits.

Key takeaways

Do not start from company names — start from where the problem sits. Whether it is rankings, production, business definition, or stalled implementation changes which type of partner fits.
Even within the same type, scope of work differs from company to company. The comparison below describes tendencies of each type, not a ranking of individual firms.
Search rankings, being cited in AI answers, and enquiry volume cannot be guaranteed by any partner. Netsujo SIGNAL does not guarantee them either.

What this article covers

How the right partner changes depending on where the problem sits: rankings, production, business definition, or stalled implementation
How to tell partners apart using scope-of-work axes
What to collect when handing over, and what to ask before requesting a quote

How to diagnose why a BtoB site is not generating enquiries（日本語）For isolating the cause of low enquiry volume itself.

Cost and timeline for BtoB web improvement（日本語）For a sense of budget and duration.

Choosing an AI-search (AIO) partner: twelve things to check（日本語）For vetting a partner specifically on AI-search work.

First, decide what — and how much — to outsource

Web-acquisition work broadly splits into the areas below. Before choosing a partner, work out which of these areas your organization actually needs.

Strategy and research: keyword and competitor research, search-intent research, and designing an improvement plan
Production and design: design and coding for a site or landing page
Content: planning and writing articles or copy
Analysis: analyzing real GA4 and Search Console data and identifying issues
Implementation: shipping structured data, titles, internal links, and tracking tags
Ongoing operation: continued measurement and improvement after launch

Deciding whether you want one partner to own all of this, whether to split it across several, or whether to keep some of it in-house is what makes clear what kind of partner you should be looking for.

Partner types (a neutral overview)

Partners come in a few broad types, each strong in a different area. The table below describes general tendencies — actual scope of work varies by company. Read it as a description of characteristics, not a ranking.

Type	Typically strong at	Typically needs to be complemented
SEO agency	Research, strategy, search analysis	Production and implementation may need to be arranged separately
Web production studio	Design, development, production implementation	Ongoing analysis and improvement may be handled separately
Advertising agency	Ad design and operation, ad-side measurement	Organic search and site implementation may fall outside scope
Analysis-and-deliverable vendor	Analysis of real data and implementable deliverables	Who owns production implementation is often decided separately
In-house (handled internally)	Fast response to internal context, accumulated know-how	Securing specialist staff and hours

Comparing scope of work across eleven axes

Define the axes before comparing. The eleven axes below are the areas where responsibility tends to split in a web improvement engagement. Rows are the axes; columns are partner types.

The SEO agency, web production studio, advertising agency, and in-house columns describe tendencies of each type. Actual scope differs by company. Do not conclude that a whole category is "reports only" or "does not implement." Only the Netsujo SIGNAL column reflects our own plan definitions.

Axis	SEO agency	Web production studio	Advertising agency	In-house	Netsujo SIGNAL
Defining the business goal	Often treated as a search-side target	Sometimes confirmed as a premise for the build	Often treated as an ad-campaign objective	Knows the business context best	Works backwards from the customers you want and the deal you want
Observation across search and AI	Tends to be a core area	Varies by company	Often focused on ad metrics	Tooling and available hours tend to be the constraint	Continuously checks the public site and how it appears in search and generative AI
Checking initial HTML, DOM, and structured data	Some firms treat it as a technical audit	Many can check it from the implementation side	Varies by company	Depends on whether there are IT engineers in-house	Checks initial HTML, the rendered DOM, and JSON-LD
Copy	Some firms include article production	Writing is sometimes included	Ad copy production is often included	Can describe the business most accurately	Specifies what should change; full-scale writing is not included
Design	Varies by company	Tends to be a core area	Banner and landing-page production is sometimes included	Depends on the internal team	Not covered
Code implementation	Varies by company	Tends to be a core area	Landing-page production is sometimes included	Depends on the development team	Production implementation is handled by the client or their existing studio; only SIGNAL 初期改善90日 (the initial 90-day improvement plan) includes implementation support within an agreed scope
GA4 and Search Console measurement	Many firms use it for analysis	Initial setup is sometimes included	Often focused on ad measurement	Access is normally held internally	Analyzed on paid plans after read-only access is connected; outside the scope of the free diagnostic
Change specification	Granularity of deliverables varies by company	Sometimes organized as implementation instructions	Varies by company	Depends on in-house know-how	Produces a recommended improvement with target URL, change, completion criteria, and verification method
Implementation management	Depends on the contract	Manages the portion it implements itself	Depends on the contract	Internal coordination stays internal	Approval and implementation-tracking features are shared across all three plans; human progress management and coordination with an existing studio sit with SIGNAL 改善推進 (delivery support) and SIGNAL 初期改善90日 (initial 90-day improvement)
Post-launch verification	Often covered in periodic reporting	Depends on the maintenance contract	Often verifies ad metrics	Someone has to own it on an ongoing basis	Technical checks immediately after launch, plus a 28-day comparison against a baseline period
Outcome guarantee	Cannot be guaranteed	Cannot be guaranteed	Cannot be guaranteed	Cannot be guaranteed	Netsujo does not guarantee it either

The final row is the same for every type. Search rankings, citation in AI answers, and enquiry volume are decided by search engines, generative AI, and the market — so neither an outside vendor nor an internal team can guarantee them. Netsujo does not guarantee them either. If a proposal promises a guarantee, ask what it is based on.

Drawing the line in advance — which of the eleven axes go outside and which stay in-house — lets you approach several firms under the same conditions. If the line is vague when you request quotes, each firm prices a different premise, and a like-for-like comparison never happens.

Choosing by symptom

Once the symptom is clear, what to check first and which type of partner fits both follow from it. The table below is our own working guideline, not a universal answer.

Symptom	Check this first	Partner type that tends to fit
Ranking well but not being clicked	Click-through rate by query, and whether the title and description match search intent	Someone who can read search data. If your team can use Search Console, you can start in-house
Traffic exists but no enquiries	Where visitors stop: service explanation, comparison material, navigation, the form, or measurement	Someone who can isolate the stage where it stops. Identify the cause before commissioning production
Analysis exists but implementation does not progress	Whether the deliverables specify target URL, the change, and completion criteria	Split between someone who can write the spec and someone with the hands to implement it. Also decide who manages it
No agreement on what to fix	Whether the business goal and target customer are written down and agreed internally	Someone who can start from defining the business. A small diagnostic tends to work as an entry point
You want to rebuild the site	What to keep from the current site (copy, URLs, backlinks, measurement) and why you are rebuilding	Someone strong in production and implementation. Decide who owns measurement design and redirects first
Enquiries stop when you pause ads	The division of roles between paid and organic, and whether the two are measured separately	Split between whoever runs the ads and whoever handles organic search and site implementation

Reviews public information only and organizes implementation issues visible on the public site. No card registration, and no automatic transition to a paid contract. It does not guarantee search rankings or AI citation.

Get a free diagnostic of implementation issues

What to confirm before you commit

Clarity of scope and deliverables: Confirm exactly what will be delivered, and in what form — whether it stops at reporting the analysis, or includes implementable code and copy. Also confirm who puts it into production after delivery: your team, your existing production studio, or the partner itself.
How to read a track record: Judge a track record not just by count or how impressive it looks, but by whether the partner has experience with issues, scale, and industries close to your own. Some detail may be withheld for confidentiality, so asking about their general approach within what they can share is still useful evidence.
Measurement and visibility of results: Confirm what will be used to measure before-and-after (metrics from GA4, Search Console, and similar tools). Without a measurement design in place, you cannot verify whether anything actually improved. Also confirm that your own organization holds administrator access to the measurement tools.
Contract and cost scope: Confirm what is included in the cost and what is billed separately (production implementation, ongoing operation, additional revisions, and so on), whether billing is monthly or a lump sum, and whether there is a minimum contract term.
Reading the language carefully (important): Be cautious of anyone making an absolute promise, such as "we guarantee the #1 spot" or "we will definitely get you cited by AI." Search rankings and AI citation are decided by the search engine or the AI itself, not by an outside vendor, so no one can guarantee them. It helps to check whether the partner clearly distinguishes what it can and cannot do.

What to collect when handing over

When you switch partners, how much information you can collect determines how quickly the next team gets going. Confirm that you can receive the following from your existing production studio or previous support firm.

A list of target URLs: The purpose of each page, and whether it is public, private, or redirected.
Change history: When, which URL, and for what purpose it was changed.
Measurement configuration: The GA4 property, event definitions, key events, and the GTM container.
Access rights: Administrator access to GA4, Search Console, the CMS, the domain, DNS, the server, and the repository.
Source files for copy and images: Editable file formats, and the licensing scope for photography and illustration.
Where technical settings live: Where structured data, canonical tags, redirects, robots.txt, and the sitemap are configured.
Outstanding items: Issues already raised but not yet implemented, and why they were not.
External service contracts: Tools and SaaS in use, whose name the contract is in, and how it is paid for.

Access rights in particular take time to transfer once a contract has ended. Requesting the transfer as soon as a cancellation or handover is decided reduces rework. This is our own working guideline, not a universal answer.

Questions to ask before requesting a quote

Put the same questions to every firm — the level of detail in the answers is itself a point of comparison. Lining up prices alone is not a comparison if the included scope differs.

What will we receive, and in what form (report, copy, code, specification)?
Who puts changes into production — our team, our existing studio, or you?
How is measurement designed, and who holds access to GA4 and Search Console?
What is included in the fee, and what is billed separately?
What is the contract term, and what are the renewal and cancellation conditions?
Who is the point of contact and who does the actual work, and how is the team structured?
Do you use any language guaranteeing rankings or citation, and how do you explain what you cannot do?
At the end of the contract, what will be handed over, and in what format?

The more specific the answers, the fewer misunderstandings after signing. If a scope question only returns "we will handle it depending on the situation," fix the scope in writing before work starts.

A step-by-step approach to selection

1. Decide where the problem sits: rankings, production, business definition, or stalled implementation.
2. Of the eleven axes, write down what goes outside and what stays in-house.
3. List two or three partner types that fit that scope.
4. Ask each one the same set of questions, and compare deliverables, measurement, cost, and approach.
5. Also check how carefully each one words its claims — for example, whether it makes absolute promises.
6. If there is a small way to start (a diagnostic, an initial analysis), start there and confirm the fit before committing further.

What SIGNAL covers, and what it does not

Netsujo SIGNAL is our own service, and it falls into the "analysis-and-deliverable" type in the comparison above. It is not a service that performs every area on its own. Here is what it covers and what it does not.

SIGNAL 定期診断 (recurring diagnostics plan): Continuously checks the public site, how it appears in search and generative AI, and — once read-only access is connected — real GA4 and Search Console data, then produces priority issues and recommended improvements (target URL, the change, completion criteria, verification method). Design decisions and production implementation are handled by your team or your existing studio. The approval and implementation-tracking features are available on all three plans, but progress management by Netsujo and post-launch checks are not included.
SIGNAL 改善推進 (delivery support plan): Adds, on top of the above, finalizing the improvement plan, supporting internal decision-making, coordinating with your existing production studio, progress management, and post-launch checks of HTML, metadata, structured data, and GA4 events. Production implementation is, as a rule, carried out by the client or their existing studio.
SIGNAL 初期改善90日 (initial 90-day improvement plan): A project-shaped engagement that puts the initial problems of a web sales foundation in order within 90 days. It includes diagnostics across all sales-related pages, recommended improvements for key pages, implementation support within an agreed scope, setting up measurement such as GA4, post-launch checks, and handover to ongoing operation. Standard human-led work is capped at up to 10 key pages and up to 30 hours in total, whichever is reached first.

Not covered: design production and full site redesigns
Not covered: new page production and CMS migration
Not covered: unlimited copywriting (recommended improvements describe what should be written, but full-scale writing is not included)
Not covered: ongoing production implementation carried out by Netsujo
Not covered: system development, backend development, and external system integration
Not covered: photography, video, and illustration
Not covered: specialist review in fields such as law and medicine

See plan pricing and contract terms for Netsujo SIGNAL

This is not a claim of being better than other vendors — it is a description of the scope of one option among several. It does not guarantee search rankings, citation in AI answers, or enquiry volume.

What the free diagnostic can and cannot check

The free diagnostic exists as a small way to start, but it covers public information only. Here is what it can and cannot see.

Can check (public information)	Cannot check
HTTP status and redirects	Real GA4 data (sessions, key events, drop-off points)
Initial HTML and the rendered DOM	Real Search Console data (impressions, clicks, and position by query)
Title, description, and canonical	Source repository, CMS templates, and GTM configuration
robots.txt and sitemap	Private pages, members-only pages, and internal systems
Heading and body structure, internal links
JSON-LD structured data
Consistency of company details, pricing, and track record across pages
CTA and form navigation

Real GA4 and Search Console data are reviewed on a paid plan, after read-only access has been connected. The free diagnostic requires no card registration and does not transition automatically to a paid contract.

Summary: a pre-engagement checklist

Decided where your problem sits: rankings, production, business definition, or stalled implementation
Sorted out which areas you need (strategy / production / content / analysis / implementation / operation)
Confirmed the deliverable format and who owns putting it into production
Confirmed the measurement design and who holds access to the measurement tools
Confirmed the cost scope (what is billed separately, contract length, cancellation terms)
Confirmed what deliverables and access rights you can take with you at the end of the contract
Confirmed the partner is not making an absolute promise about rankings or AI citation
Confirmed there is a small way to try things out first

FAQ

Should I hire an SEO agency or a web production studio?: It is not about which is better — it depends on your own issue. If you need strategy or search analysis, an SEO agency tends to fit; if you need design or production implementation, a production studio tends to fit. If you need both, consider splitting the work or looking for a partner that covers both. Since actual scope of work differs by company, clarify the scope and confirm it directly.
How do I work out where the problem sits?: Work backwards from the symptom. Ranking but not being clicked points to how you appear in search results; traffic without enquiries points to on-site explanation and navigation; analysis without implementation points to the granularity of deliverables and your implementation capacity; no agreement on what to fix points to defining the business goal. The partner type that fits changes with each symptom.
When switching partners, what should I collect from the previous one?: A list of target URLs, change history, administrator access in GA4, owner access in Search Console, management access to the CMS and the domain, source files for copy and images, where structured data and redirects are configured, and outstanding items. Transferring access before the contract ends reduces rework. This is our own working guideline, not a universal answer.
Can I trust a company that promises "we'll get you to #1 in search"?: Search rankings are decided by the search engine, not something an outside vendor can guarantee. An absolute promise is a piece of language worth reading carefully. Check whether the vendor clearly distinguishes what it can and cannot do.
Is it better to handle this in-house or outsource it?: If you want to keep know-how in-house or respond quickly to internal context, in-house work fits, but securing specialist staff and hours becomes the challenge. Outsourcing can supplement expertise and speed, though know-how can be slower to stay in-house. A hands-on-alongside model that leaves deliverables and instructions behind sits in between.
Does the free diagnostic also look at GA4 and Search Console?: No. The free diagnostic covers public information only, so private measurement data such as GA4 and Search Console is out of scope. It examines the HTML, structured data, internal links, and navigation that can be checked from the public site. No card registration is required, and there is no automatic transition to a paid contract.
When does Netsujo SIGNAL fit?: It fits situations such as wanting to prioritize improvements using real data, wanting implementable deliverables in addition to a report, or wanting to keep production implementation in-house or with your existing studio. It does not cover design production, new page production, full-scale copywriting, or system development. It also does not guarantee search rankings, citation in AI answers, or enquiry volume.

From a free diagnostic based on public information, through GA4 and Search Console analysis, to producing recommended improvements. Design production and new page production are not included. It does not guarantee search rankings or AI citation.

Get a free diagnostic of implementation issues