Web Design & CRO · Guide
2 October 2026 · Tallium AI Marketing
A web development agency is a company that builds, codes and maintains websites for clients, usually charging a one-off project fee or an ongoing retainer. It is a useful starting point if you need a site built, but it is not a marketing solution, and most businesses realise that gap within months of launch. This guide explains what these agencies actually do, where they stop, and what a business can run on its own afterward.
What a web development agency does
A web development agency designs and builds websites. That typically covers the front-end layout, back-end functionality, hosting setup, e-commerce integration if needed, and basic technical maintenance like updates and security patches.
Some agencies also offer design services, copywriting for the site itself, and light SEO work during the build, such as setting up page titles or a sitemap. The project usually ends, or moves to a maintenance retainer, once the site goes live.
- ✦Website design and user experience
- ✦Front-end and back-end development
- ✦Hosting, domains and technical setup
- ✦E-commerce platform integration
- ✦Basic on-page SEO during the build
What a web development agency usually does not do
Building a website is a one-time project. Growing a business from that website is an ongoing job, and it is not what most development agencies are set up to deliver. Social media scheduling, paid ad management, content creation, review management and continuous SEO are usually separate services, often from separate vendors.
This is why businesses commonly end up with a website from one agency, social media handled by a freelancer, ads run by another specialist, and SEO left to whoever has time. Each piece works in isolation, costs are scattered across invoices, and nobody owns the full picture.
Why a website alone does not grow a business
A website is infrastructure, not marketing. It needs traffic, content, visibility in search and AI answers, and consistent activity on the channels customers actually use, otherwise it sits unseen. That ongoing work is where most of the budget and time goes after launch, not before it.
This is the stage where businesses either hire multiple specialists, sign a retainer with a marketing agency, or look for a way to run marketing themselves without needing a team.
A different approach: run your marketing yourself from one app
Tallium Marketing is built for exactly this stage. It is an all-in-one AI marketing app, not an agency and not a done-for-you service, that lets a business run social media scheduling, AI content creation, paid ads management across Meta, Google and TikTok, SEO and AIO, review and reputation management, and e-commerce marketing for Shopify, WooCommerce, Amazon and Noon, all from one AI-automated dashboard.
Instead of paying a web development agency for the build, then separate vendors for marketing, a business logs into one app, connects its accounts, and lets the AI automation handle scheduling, optimisation and reporting. Every team member gets access since every plan includes unlimited users with no per-seat fees, and the whole suite is one flat, affordable price.
Web development agency vs an all-in-one marketing app
A web development agency builds the site. An all-in-one marketing app like Tallium runs everything that happens after the site is live: content, ads, SEO, reviews and e-commerce visibility, from a single login instead of a stack of disconnected tools and invoices.
Because Tallium Marketing is part of the wider Tallium AI suite alongside Tallium AI Accounting and Tallium AI CRM, marketing, sales and books can sit under one account, so a lead generated by an ad or a social post can be tracked through to a sale and the books, without exporting data between platforms.
What to check before you commit to either option
If you need a site built, a web development agency is still the right call. But before adding marketing retainers or separate tools on top of it, it is worth checking whether a single app can cover social, ads, SEO and reviews instead.
- ✦Does the pricing scale with team size, or is it one flat fee regardless of users
- ✦Can one dashboard actually replace three or four separate subscriptions
- ✦Is SEO limited to Google, or does it also cover AI answer engines like ChatGPT and Google AI Overviews
- ✦Does reporting live in one place, or do you have to stitch together exports from each tool
Frequently asked questions
Is a web development agency the same as a marketing agency?
No. A web development agency focuses on building and maintaining the website itself, while a marketing agency or marketing software handles ongoing work like content, ads, SEO and social media. Many businesses need both the build and the ongoing marketing, just not necessarily from the same source.
Do I still need a web development agency if I use Tallium Marketing?
If you need a new website built or a major redesign, yes, that is still a development project. Tallium Marketing is not a website builder, it is the AI-automated app that runs your social media, ads, SEO, content, reviews and e-commerce marketing once the site exists.
What does 'unlimited users with no per-seat fees' actually mean?
It means your whole team, whether that is two people or twenty, can log into Tallium Marketing under one flat subscription without paying extra per person. Most marketing software charges per seat, which quietly inflates costs as a team grows.
Can one app really replace separate SEO, social and ads tools?
Tallium Marketing was built to cover social media scheduling, AI content creation, paid ads management, SEO and AIO, review management and e-commerce marketing in one AI-automated dashboard, so most businesses do not need separate subscriptions for each function.
Is Tallium Marketing an agency or a retainer service?
No. Tallium Marketing is software that your business uses directly. There is no retainer, no account manager doing the work for you, and no agency relationship, just one app you and your team run yourselves.
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