API integrations that stop the re-keying
We connect the systems your business already runs on, so orders, invoices, customers and stock move between them automatically. That can be a single integration between two tools, or a small service that keeps several systems in sync and alerts you when something fails.
At a glance
- Typical timeline
- 4 to 6 weeks for simple integrations. 6 to 10 weeks for multi-system. 3 to 6 months for enterprise platforms.
- How we price
- Fixed price for an agreed scope, after a short discovery
- Technology
- Node.js, TypeScript, FastAPI, Python, REST APIs, GraphQL
What this usually looks like
CRM to Accounting Sync
Automatically create invoices in Xero or QuickBooks when deals close in Salesforce or HubSpot.
E-Commerce to ERP Integration
Sync orders, inventory, and customer data between your online store and warehouse management system.
HR to Payroll Automation
Connect HR systems with payroll providers for automated salary calculations and payment processing.
Marketing Automation Sync
Connect website forms, CRM, and email platforms for seamless lead nurturing workflows.
Legacy System Modernisation
Build API layers around legacy databases to enable modern application integration.
Multi-Channel Data Aggregation
Consolidate data from multiple sources into a unified dashboard or data warehouse.
What you can expect
- Eliminate manual data transfer between business systems
- Achieve real-time data synchronisation across all tools
- Reduce data entry errors by automating information flow
- Enable cross-system reporting and unified business intelligence
- Connect legacy systems with modern applications
- Automate triggered actions across multiple platforms
How the project runs
Integration Assessment
Elsio evaluates your systems, API capabilities, data formats, and integration requirements.1 week
Architecture Design
Elsio designs the integration architecture, data mapping, error handling, and monitoring strategy.1 to 2 weeks
Development & Testing
Elsio builds the integration middleware, implements data transformations, and tests with real data.3 to 6 weeks
Deployment & Monitoring
Elsio deploys the integration with logging, alerting, and error recovery mechanisms.1 week
What you receive
- Integration middleware or API gateway
- Data mapping and transformation logic
- Error handling and retry mechanisms
- Monitoring and alerting dashboard
- API documentation
- Integration testing suite
- 30-day post-launch support
Is it the right choice?
If both tools have a native integration or a Zapier or Make connector that does what you need reliably, use it. Custom integrations make sense when volumes are high, the logic is specific to your business, the data must be validated, or the off-the-shelf connector keeps breaking.
Strengths
- Eliminates manual data entry between systems
- Real-time data consistency across the business
- Reduces human error in data transfer
- Enables unified reporting across systems
- Automates triggered workflows
- Scales without additional manual effort
Trade-offs to plan for
- Dependent on third-party API availability and stability
- API rate limits may constrain sync frequency
- Changes to third-party APIs may require updates
- Complex data transformations increase development time
- Some legacy systems lack API access
Common questions
What is an API integration?
How are API integrations priced?
Can you integrate systems that do not have APIs?
How do you handle integration errors?
What is the difference between API integration and API development?
How long does API integration take?
Talk to us about API integrations
Send a short brief and we will come back with questions, a rough approach and whether we are the right fit. No sales sequence.
Prefer email? info@elslabs.co.uk
Or message us on WhatsApp.