Modern MarTech Stack: A Guide for UK and Irish SMEs
Table of Contents
A modern MarTech stack (the set of software a business uses to plan, run and measure its marketing) covers five layers: customer data, website and content, automation, conversion and measurement. In ProfileTree’s work with SMEs across the UK and Ireland, most businesses already pay for enough tools and get more from connecting them and training their team than from buying another subscription.
What Is a MarTech Stack?
A MarTech stack is the group of marketing technology tools a business uses together, from the CRM (customer relationship management system) that holds contact records to the analytics platform that shows whether a campaign worked. The word “stack” matters, because the tools are meant to pass data to each other. Good tools that never share information give you separate reports to reconcile by hand, and very little sense of how a customer moved from first visit to enquiry.
Small businesses tend to build their stack one tool at a time, usually when a problem needs solving quickly. A CRM arrives when leads start slipping, an email platform when the newsletter outgrows a spreadsheet, and a social scheduling tool when someone leaves and their replacement prefers a different one. A few years later the business pays for seven or eight products, uses perhaps half of what they offer, and someone exports spreadsheet files every week to move data from one system to another.
The difficulty for a small business is that much of this software is designed for enterprise teams with marketing operations staff and an integration budget. In an SME, one or two people often run the whole digital function alongside other work. A modern MarTech stack for that team has to be small enough for one person to understand and connected well enough to produce a report without manual work.
That is the problem a digital marketing strategy should solve before any new tool is bought. ProfileTree is a Belfast web design and digital marketing agency, founded in 2011 and based at the McSweeney Centre, and the stack reviews we carry out for clients start with what the business needs to know about its customers, then work back to the tools.
The Five Layers of a Modern MarTech Stack
A modern MarTech stack works best when you think of it as five functional layers, each with one clear job. A missing layer weakens the others, and two or three tools doing the same job in one layer is almost always wasted budget. The MarTech stack tools below are grouped into the layers every SME needs in some form, even when a single product covers more than one of them.
Customer Data and Records
Everything else depends on clean, connected customer data, so this layer comes first. For a typical SME it means a CRM, which stores contacts, logs calls and emails, and gives sales and marketing a shared view of each customer. HubSpot, Zoho CRM and Pipedrive are common choices at this size, and the right one is the one that fits how your team actually sells. Our guide to choosing a CRM for a small business sets out the selection criteria in more detail.
A CDP (customer data platform, software that combines behaviour from your website, email and other channels into one profile per customer) is a later step. It starts to earn its cost when you run regular activity across three or more channels and need one record that ties them together. Below that level, a well-kept CRM with consistent fields and a named owner for data quality does the same job for far less money.
Website and Content
This layer covers the CMS (content management system, the software you use to edit and publish your website), along with your email design, image library and any tools used to produce content. WordPress remains a sound choice for most small businesses because a small team can publish and edit without a developer, and because it connects easily to analytics, CRM and email tools.
The most common fault we find in audits sits here. A website built without analytics, search tracking or form connections in place from the start produces fragmented data from its first day, and no tool further down the stack can repair that afterwards. If you are planning a new site, agree which details every form should pass to the CRM and which actions the important pages should record in analytics before the build begins.
Automation and Email Journeys
Marketing automation uses the data in your CRM to send messages and update records without a person carrying out each step. At SME level, ActiveCampaign, Mailchimp’s automation features and HubSpot’s marketing tools cover the essentials: welcome emails, follow-ups after an enquiry, re-engagement messages and lead scoring (giving each contact a score based on their behaviour, so sales can see who is ready to talk).
Automation is the layer where unused paid features pile up most quickly. Before you add a tool, list the journeys you actually run and check whether your current platform can already handle the next one. If you need to justify the spend, our article on how to calculate marketing automation ROI shows how to measure it against revenue.
Conversion and On-Site Behaviour
Conversion tools show what visitors do on your website and help you turn more of them into enquiries or sales. They include heatmaps (visual maps of where people click and scroll), session recordings, A/B testing (showing two versions of a page to see which performs better), landing page builders and live chat.
This work does not need an expensive tool. Microsoft Clarity is free, and Hotjar offers a free plan. Google Optimize, which many small sites used for A/B testing, closed on 30 September 2023, so any guide or setup that still relies on it is out of date. For most WordPress sites, Clarity alongside Google Analytics 4 is enough to find where visitors drop off and which calls to action they ignore.
Measurement and Attribution
Google Analytics 4 (GA4) and Google Search Console are the standard starting point for measuring a website. GA4 records what visitors do on the site, and Search Console shows how the site appears in Google’s search results, including the queries people used to find it. Set up together, they cover most of what an SME needs to know about its website’s performance.
Attribution means deciding which steps in a customer’s journey deserve credit for a sale or enquiry. For an SME running search, email and organic social, GA4’s built-in reports are usually enough, and detailed multi-touch modelling needs more data than most small businesses generate. Do not plan your measurement around third-party cookies disappearing, because Google confirmed in April 2025 that Chrome will keep its current approach and leave the choice to users (Google Privacy Sandbox announcement, 22 April 2025). Data you collect yourself, such as form submissions and email engagement, is still the most reliable base for reporting.
| Layer | What it does | Typical SME tools | Where SMEs most often fall short |
|---|---|---|---|
| Customer data and records | Holds contacts, deals and consent records | HubSpot CRM, Zoho CRM, Pipedrive | Data quality and a named owner |
| Website and content | Publishes the site, emails and other content | WordPress, Mailchimp, Canva | Analytics and form connections from launch |
| Automation and email journeys | Sends messages and updates records automatically | ActiveCampaign, HubSpot Marketing Hub | Training on features already paid for |
| Conversion and on-site behaviour | Shows where visitors act or drop off | Microsoft Clarity, Hotjar, Intercom | Regular testing and follow-through |
| Measurement and attribution | Reports what is working | GA4, Google Search Console | Connecting reports to enquiries and sales |
UK and Irish Data Rules That Shape Your Tool Choices
Any tool that handles the personal data of people in the UK or the EU has to meet data protection law, wherever the software company is based. In practice that means a data processing agreement with each vendor, a clear lawful basis for each use of the data, a retention policy, and safeguards for any transfer of data outside the UK or EU. This applies to every part of a modern MarTech stack, from the CRM and email platform to the analytics and any integration that passes customer data from one system to another.
Cookie rules are where the UK and Ireland now differ, and the difference matters for a business that sells into both. Under the Data (Use and Access) Act 2025, the ICO’s guidance allows some analytics to run without consent where it collects aggregate statistics only to improve your own website, provided you explain what you do and give visitors a simple, free way to object (ICO guidance on the exceptions). The exception does not cover advertising, and a third-party analytics provider has to act only on your behalf for it to apply.
The Data Protection Commission in Ireland lists only two kinds of cookie that are exempt from consent: those strictly necessary for a service the visitor asked for, and those used only to carry a communication across a network (Data Protection Commission guidance on cookie consent). Analytics is not on that list. A business in Northern Ireland that sells to customers in the Republic should therefore check whether its consent setup meets the Irish standard as well as the UK one, and take advice from a data protection specialist before relying on the UK exception.
Where your data is stored also counts for some clients. Public bodies, healthcare and financial services often expect data to stay in the UK or EU, so check the data residency options in each tool’s contract before you sign up. Our article on security and compliance in your MarTech stack covers access controls and vendor checks in more depth.
How to Audit the Stack You Already Pay For
Most SMEs do not need a new stack. They need a clear picture of the one they have and a short plan to use it properly, and an audit of a small business stack can usually be done in a day with the right people in the room.
- List every tool, subscription and platform your marketing touches, including systems owned by other teams that feed marketing data, such as your online shop, booking system or call tracking.
- Assign each tool to one of the five layers. A layer with nothing in it is a gap, and a layer with several tools doing similar work is a candidate for consolidation.
- Estimate how much of each tool your team actually uses. A platform used at a fraction of its capability for years usually points to a training gap, and a cheaper product will not fix that.
- Map where data moves automatically and where someone exports and re-uploads it by hand. Each manual transfer costs staff time and introduces errors, so these are often the quickest wins.
- Record each renewal date, contract length and current price, then work out the monthly cost of the stack per active user.
Finish by asking what each tool is supposed to make happen and how you would know. For a CRM, that might be fewer enquiries left without a reply or a faster response time. For email automation, it might be the revenue that automated journeys bring in compared with one-off campaigns. A tool that cannot show any outcome after proper setup and training is the first one to question at renewal.
The output is a short list of tools to keep, tools to drop or merge, connections to build and training to arrange. That list is worth more to a small team than any vendor comparison.
Three Starting Points for a Modern MarTech Stack
There is no single correct stack, and a 12-person accountancy practice needs something quite different from an online shop. The three outlines below are sensible starting points for UK and Irish SMEs, to adjust once the audit shows what you already have.
Professional Services Firms
A firm of 10 to 50 people usually needs a CRM with pipeline tracking, a WordPress website with search and analytics set up properly, an email platform with basic automation, GA4 with Search Console, and a scheduling tool for LinkedIn. Five tools with a named owner each, connected at the data level, will serve this kind of business well. Two or three staff trained on each platform keep the stack running through holidays and staff changes.
Online Shops
An ecommerce business selling mainly to UK and Irish customers can use WooCommerce or Shopify as both its shop and its website. Add an email platform with abandoned basket and post-purchase journeys, GA4 with ecommerce tracking set up correctly, and a heatmap tool for the product and checkout pages. Cookie consent needs particular care here, because most shops rely on analytics and marketing tags that fall outside the UK statistical exception.
B2B Firms with Long Sales Cycles
Where a sale takes months and involves several decision-makers, the stack needs more depth. That usually means a CRM with lead scoring, automation for longer nurture sequences, reporting that shows which content influences deals, and an attribution approach that covers the whole sales cycle. This is the type of business where a CDP is most likely to earn its place in a modern MarTech stack.
Getting Value from the AI Features Already in Your Tools
Most mid-tier marketing tools now include AI features, so the useful question for an SME is how deliberately it uses them. Common examples include send-time prediction in email platforms, suggested subject lines and copy, automatic tagging and scoring of leads in a CRM, and draft content briefs inside content tools. Many of these sit inside subscriptions that businesses have bought and never switched on.
The risk is buying separate AI writing, analytics and advertising tools that repeat what a modern MarTech stack can already do. Check what each current platform offers, choose one task where AI could save real time, set it up properly, and measure the result before adding anything else.
“The businesses getting results from AI in their marketing tools are the ones that put it into one process that matters to them and measured what changed. The ones that switched on every feature for everyone and hoped for the best are usually back where they started six months later. ProfileTree’s training for SMEs in Northern Ireland teaches the first approach, because it is the only one we have seen work,” says Ciaran Connolly, founder of ProfileTree.
Our AI training for business works with the tools a team already has, so people learn to configure and judge the AI features in their own CRM, email and analytics platforms.
Getting Help with Your MarTech Stack
The most useful next step is the audit described above, done with someone who can see how the tools connect and where the team needs support. Training usually brings the quickest return, because a modern MarTech stack only pays for itself when the team can use the features already in it every week.
ProfileTree runs digital training for your team built around the website, data and tools you use, from £350 plus VAT. Strategy work, including a full stack review and plan, is quoted on request. If your business is in Northern Ireland, you can also read about our digital marketing in Northern Ireland and the businesses we support across the region.
Frequently Asked Questions
What MarTech tools suit a mid-sized in-house marketing team?
A mid-sized in-house team usually needs one tool per layer: a CRM, a website platform such as WordPress, an email and automation platform, a behaviour tool such as Microsoft Clarity, and GA4 with Search Console. The brand matters less than whether the tools share data and whether each has an owner. Teams at this size often benefit from an all-in-one platform such as HubSpot, because it reduces the connection work, but a carefully joined set of specialist tools can serve just as well if a team member has time to maintain it.
How many tools does a modern MarTech stack need for an SME?
Most SMEs can cover every layer with five to eight connected tools. The count matters less than how well data moves from one to the next and how confidently the team uses each one. If two tools in your stack do the same job, one of them is probably costing you money without adding anything, and an audit will show which.
Can Google Analytics connect to marketing automation tools?
Yes, GA4 connects to most mainstream CRM and email platforms, either through a built-in integration or through Google Tag Manager (a free tool for managing tracking code on a website). The usual setup sends form submissions and other key actions to GA4 as events and passes campaign source information into the CRM. Test the connection after setup, because a broken tag can stop reporting without any visible error on the site.
How do I make my MarTech stack GDPR compliant?
Start with a data processing agreement for every tool that handles personal data, a clear lawful basis for each use, and a written retention policy. Add a consent platform on your website that meets UK rules and, if you sell into the Republic of Ireland, Irish rules as well. For tools based outside the UK and EU, check that safeguards such as standard contractual clauses are in place for data transfers. This is general guidance, so take specialist advice for your own situation.
Is an all-in-one suite better than separate specialist tools?
For a small business without a marketing operations person, an all-in-one suite is the more practical choice. It keeps data in one place and reduces the work of maintaining connections. Separate specialist tools can be stronger individually, and they suit a team with the time and skills to manage the integrations between them.
Should my team be trained on the MarTech tools we already have?
Yes, and in most stack audits training gives a faster return than any new subscription. A tool that only a departing colleague understood becomes a cost the day they leave. Training a few people on each core platform, using your own data and real tasks, makes the stack resilient and shows which paid features are worth keeping.