**About this file** This Markdown is an auto-generated, plain-text snapshot of one page on mertosolutions.com. Use it to paste context into an AI assistant. Visual layout, images, and interactive elements exist only on the live site - see **Canonical** below. **Page:** API Integration Services UK | Connect Your Systems & Automate **Description:** Stop losing hours to disconnected software. Our API integration services connect CRMs, ERPs, and legacy systems for UK businesses. Get a free assessment today. **Canonical:** https://mertosolutions.com/api-integrations --- # Your systems, _finally working together._ API Integration Services One integration. Every tool in sync. Your team loses hours to data that doesn't move cleanly between systems. We build API integration services that fix that. We connect CRMs, ERPs, and legacy stacks to modern platforms so your data flows automatically. We believe your team's time is too valuable to spend on work that software should handle. 50+ businesses served Live in 2–4 weeks UK-based team Book a Free Consultation See how we work Free business assessment · No commitment required · UK-based team API Hub Salesforce Shopify HubSpot Xero SAP WooCommerce Integrates with Salesforce HubSpot Xero Shopify SAP WooCommerce QuickBooks + many more Why we do this ## Capable businesses deserve software that _works as hard as they do_ We started Merto because we kept seeing the same pattern: talented teams, ambitious plans, and technology that wasn't keeping up. Not because the right solutions didn't exist, but because nobody had taken the time to connect everything properly. That's the gap we fill. We take the time to understand how your business actually runs, not just how your software is supposed to run, then build the integrations that close the distance between the two. ### Your time matters We measure success by how many hours your team gets back, not by how complex the solution is. ### No surprises Fixed pricing, clear timelines, and documentation your team can actually understand. ### Built to last Every integration we build is designed to grow with your business, not become tomorrow's bottleneck. The real cost ## Disconnected systems aren't just an IT problem. They're a _people problem._ Most businesses don't realise how much it's adding up until they see the numbers. Every hour spent re-entering data is an hour not spent selling, building, or serving customers. 15hrs+ Wasted every week Your team manually re-entering data between systems that were never designed to talk to each other. 200+ Sync errors per month Each one needing someone to catch, investigate, and fix before it causes a larger problem downstream. £2k+ Lost monthly To avoidable inefficiency, errors, and staff time spent on workarounds instead of the work that matters. API Integration Services ## API integration services built for the way your _business actually works_ From third-party software integration to legacy system modernisation, we connect your tools and automate the data flows your team currently handles by hand. ### Custom API Development Your business has specific workflows that off-the-shelf software was never built for. We build custom APIs that fit exactly how you work, scaling as your requirements grow. ### Third-Party Software Integration Your business shouldn't grind to a halt because two systems can't share data. We connect your tools so information flows automatically, and your team gets back to the work that actually requires their attention. ### Real-Time Data Synchronisation Running your business on data that's hours out of date means making decisions you can't fully trust. We build real-time data synchronisation so every system reflects what's happening right now. ### Secure and Compliant Integrations Data moving between systems is data at risk. Every integration we build is encrypted, GDPR-compliant, and built to the security standards your industry requires. ### Legacy System Integration Older systems often hold years of critical business data, but they weren't designed to connect to modern tools. We bridge the gap without forcing an expensive system replacement. ### Business Efficiency Automation Manual workflows aren't just slow. They're a hidden cost your competitors avoid when they've automated them. We map your processes, find what's holding your team back, and build the integrations that remove the friction for good. The platforms we connect every day ## We work with all major business platforms From Salesforce to Shopify, Xero to SAP. If it's in your business, we can connect it. Salesforce HubSpot Shopify Xero QuickBooks WooCommerce SAP Custom Systems > “ We were spending hours every week manually moving data between systems. Merto fixed it in two weeks and we haven't touched it since. Daniel Abbott·Managing Director, Stort Mill Recycling By the numbers 50+ Projects completed 15hrs Average saved per week 98% Client retention How we work ## Our API integration process: _clear, simple, effective_ 1 ### Discover Your Challenges We learn about your business, the systems you use, and exactly where your team is losing time. This shapes everything that follows. 2 ### Design Your Solution We map out how your systems will connect, what data will sync, and how it all works together. We agree on everything before we write a single line of code. 3 ### Build and Test We build your integration and test every data flow thoroughly. Nothing goes live until we're confident it's accurate and reliable. 4 ### Go Live and Stay Supported We manage the launch, make sure everything runs correctly, and stay available. Your first 30 days of support are included at no extra cost. Book a Free Consultation Free business assessment · No commitment required · UK-based team Real outcomes ## What disconnected systems were costing our clients, and what we _did about it_ Businesses that were losing time, making errors, and spending money on manual processes they couldn't escape from. Each project started with a real problem and ended with a working API integration that saved hours every week. E-commerce Integration ### CRM + E-commerce sync A fast-growing e-commerce brand was manually copying customer data between Shopify and HubSpot every day. Their team spent hours on data entry that never quite matched. We built a bi-directional sync that automated the entire workflow in real time. 75% Time saved 200+ Orders/day automated SShopify HHubSpot Automated reconciliationFinancial Automation ### ERP + Accounting automation A finance team was manually reconciling SAP and Xero at the end of every month. It was a process taking days, prone to human error, and costing thousands in staff time. We automated the entire invoice sync and eliminated the manual work entirely. £30k+ Saved annually 100% Error reduction Legacy Modernisation ### Legacy system modernisation A manufacturer running critical operations on a 20-year-old system couldn't connect it to the modern tools their business needed. The cost of replacing it was prohibitive. We built a REST API bridge that connected their legacy system to new cloud platforms without replacing a thing. £100k+ Costs avoided 20+ Years extended Legacy System Cloud APIs Modern Apps Related services Custom Software Development Need more than an integration? We build bespoke software, web applications and mobile apps around the way your business actually works. Learn more -> Amazon SP-API Integration Connect your Amazon Seller account directly to your inventory, fulfilment and warehouse systems. A specialist integration we have built for UK Amazon sellers. Learn more -> ## Questions about API integration, answered clearly Straight answers on timelines, security, legacy systems, and what happens after go-live. Book a free consultation -> Which business systems can you integrate with each other? + Almost any systems can be connected: CRMs like Salesforce and HubSpot, accounting tools like Xero and QuickBooks, e-commerce platforms like Shopify and WooCommerce, ERPs like SAP, and bespoke or legacy systems. If it stores or processes data, we can build a connection to it.How long does API integration take for a small business? + Simple integrations between two systems can go live in one to two weeks. More complex projects involving multiple platforms, real-time data sync, or custom authentication typically take four to eight weeks. We always agree on a clear timeline before any work begins, so you know exactly what to expect.Can you integrate with legacy systems that don't have a modern API? + Yes. Many businesses rely on older systems that weren't built with modern connectivity in mind. We specialise in bridging legacy software to new platforms without disrupting your existing operations or forcing an expensive system replacement.What support do I get after my API integration goes live? + All integrations include 30 days of support at no extra cost to handle any initial adjustments. After that, we offer flexible ongoing support plans for monitoring, updates, and scaling as your business grows. You'll also receive clear documentation so your team understands exactly how everything works.Is my business data safe during an API integration project? + Yes. All data transfers are encrypted, we work in line with GDPR requirements, and we follow industry-standard security practices. For regulated industries such as finance, healthcare, and logistics, we tailor our approach to meet your specific compliance needs.How much does API integration cost for a UK business? + Cost depends on the number of systems involved, the complexity of the data flows, and the level of ongoing support required. We provide clear, fixed-price proposals after a free consultation, with no hidden costs and no commitment required to find out what your project would involve. Ready when you are ## Stop losing time to systems that don't work together Every week your team spends on workarounds is a week not spent growing. We connect your tools, automate manual work, and give you back time to focus on what matters. Book a free consultation -> Explore all services -> Free business assessment · No commitment required · UK-based team