Integration Testing Services for Connected UK Systems

Integration Testing That Proves Your Systems Work as One

Find interface, data-flow and failure-path defects before they disrupt customers or operations. IDS Logic tests APIs, microservices, applications and enterprise platforms as one connected service.

API, microservice and system integration testing
ERP, CRM, SaaS and third-party platform assurance
Data integrity, resilience and recovery validation
Automated regression and CI/CD release evidence

Request a Free Integration Review Explore Testing Coverage

19+ Yearsof industry experience

750+satisfied customers

200+technology professionals

83%repeat and referral business

Trusted by leading organisations

Where Connected Systems Break

Individual components can pass while the complete business service still fails

Unit and component tests do not prove that interfaces, identities, data stores and third-party dependencies behave together. Our integrated testing services expose boundary risks before production users do.

Contracts drift between teams

Payloads, status codes, field rules or message formats change without every consumer and provider being ready.

Data and state diverge

A transaction succeeds in one system but leaves stale, duplicated or partially updated records elsewhere.

Test environments mislead

Unavailable suppliers, weak test data and configuration differences hide the behaviours that matter at release.

Failures cannot be recovered

Timeouts, duplicate messages and partial updates are not logged, reconciled or safely replayed by operations.

End-to-End Integration Testing Services

Assurance across interfaces, data flows, failures and complete business journeys

As an integration testing company supporting UK organisations, IDS Logic combines manual investigation, service-level automation and system-level evidence. Coverage is shaped around dependency risk, transaction value, change frequency and operational impact.

Integration Test Strategy & Dependency Mapping

Define the connected scope, material business journeys, interfaces, risks, responsibilities and evidence required for release.

System and interface inventory
Dependency and sequence mapping
Risk-based coverage model

Explore software testing services

API & Web Service Testing

Validate API contracts, requests, responses, authentication, payloads, business rules and failure behaviour.

REST, SOAP and GraphQL
Positive, negative and boundary tests
Schema and response validation

System Integration Testing Services

Prove that complete workflows operate correctly across applications, databases, services and external platforms.

Cross-system business journeys
State and transaction validation
End-to-end evidence

Microservices & Contract Testing

Test service interactions without relying only on slow and fragile end-to-end suites.

Consumer-provider contracts
Version compatibility checks
Service-level regression

Database & Data-Flow Validation

Confirm that connected systems create, transform, persist and reconcile the right data at every boundary.

Database side-effect checks
Mapping and transformation rules
Referential and state integrity

Explore data migration testing

ERP, CRM & Enterprise Platform Testing

Assure workflows that connect customer, product, finance, inventory, service and operational systems.

ERP and CRM interfaces
Batch and real-time synchronisation
Reports and downstream impacts

Third-Party & SaaS Integration Testing

Validate supplier APIs and hosted services while planning for rate limits, change, outages and restricted environments.

Payment, identity and messaging services
Webhooks and callbacks
Supplier error and fallback behaviour

Event, Queue & Asynchronous Workflow Testing

Test delayed, duplicated, reordered and failed messages across event-driven architectures.

Queues, topics and event streams
Idempotency and duplicate handling
Replay and dead-letter scenarios

Identity, SSO & Security Boundary Testing

Check that authentication, authorisation, tokens, roles and cross-system access behave as intended.

OAuth, SAML and OpenID Connect
Role and permission propagation
Session and token failure paths

Explore security testing

Performance, Resilience & Recovery Testing

Assess integration behaviour under realistic throughput, dependency slowdown and partial failure.

Latency and throughput checks
Timeout, retry and circuit behaviour
Recovery and reconciliation

Explore performance testing

Automated Integration Regression & CI/CD

Create maintainable automated checks that provide fast feedback as interfaces and services change.

API and service automation
Pipeline quality gates
Environment-aware test data

Explore test automation

Release Assurance & Post-Deployment Verification

Turn test results, defects and residual risks into a clear integration release recommendation.

Entry and exit criteria
Production smoke and monitoring checks
Residual-risk reporting

Whole-System Assurance

Six connected layers determine whether an integration is genuinely release-ready

Testing is designed across the full transaction path. This prevents a green API response from masking the wrong data, an incomplete downstream action or a failure that nobody can operate.

Consumer

Web, mobile, partner or internal system initiating the interaction.

Interface

API gateway, endpoint, contract, authentication and routing behaviour.

Service

Business rules, orchestration, validation and transaction boundaries.

Messaging

Events, queues, ordering, retries, duplication and delayed processing.

Data

Persistence, transformation, relationships, reconciliation and audit.

Operations

Monitoring, alerts, ownership, recovery and post-release verification.

Flexible Engagement Models

Use the level of integration assurance your programme needs

Start with a focused risk review, engage IDS Logic for a release or establish repeatable regression coverage for a changing connected estate.

Focused assessment

Integration Risk & Coverage Review

A time-boxed assessment of architecture, interfaces, dependencies, existing tests and release risk.

Typical outputs:

Dependency and interface map
Highest-risk integration journeys
Coverage and environment gaps
Prioritised test roadmap

Request a Risk Review

Most comprehensiveProject assurance

End-to-End Integration Testing

Complete planning, execution, automation and release evidence for a new integration, platform or transformation.

Typical coverage:

API, data and workflow validation
Failure, recovery and resilience tests
Defect triage and retesting
Release-readiness recommendation

Discuss Project Testing

Ongoing quality

Managed Integration Regression

Maintain critical automated and exploratory integration coverage across releases, suppliers and platform change.

Typical uses:

Release and sprint regression
Contract and API monitoring
Test-suite maintenance
Quality trend reporting

Discuss Managed Testing

Release Assurance Gates

A connected release needs more than a passing happy path

We convert requirements, test evidence, defects and operational readiness into explicit integration release criteria.

Review Your Integration Risks

Contract compatibility

Consumers and providers agree on required requests, responses, schemas and versions.

Interface gate

Data and business integrity

Connected transactions produce the correct state, records, calculations and downstream outcomes.

Outcome gate

Resilience and recovery

Failures, retries, duplicates, timeouts and reconciliation paths behave predictably.

Reliability gate

Operational readiness

Monitoring, alerts, runbooks, ownership and production checks support safe release.

Operations gate

Connected-System Coverage

Test the complete transaction path, not only the visible interface

We select tools and techniques around your architecture, existing delivery pipeline and evidence needs rather than forcing every integration into one framework.

API and contractsREST, SOAP, GraphQL, OpenAPI, payloads, status and versioning

Services and workflowsMicroservices, orchestration, business rules and scheduled processes

Messaging and dataQueues, topics, events, databases, mappings and reconciliation

Delivery and operationsCI/CD, observability, test management, alerts and release evidence

Platforms and Integration Patterns

System integration testing services across modern and enterprise estates

IDS Logic can work with your existing tools and environments, adding targeted automation, service virtualisation or specialist testing where it improves coverage and speed.

APIs & Web Services

REST, SOAP, GraphQL, webhooks, gateways, schemas and authentication.

Explore API development

Microservices & Events

Service contracts, containers, event streams, queues, retries and distributed workflows.

Discuss microservice testing

ERP, CRM & Finance

Customer, product, order, stock, finance, service and reporting integrations.

Explore ERP integration

Payments & Ecommerce

Checkout, payment status, refunds, subscriptions, tax, fulfilment and inventory flows.

Test critical transactions

Identity & SSO

Authentication, authorisation, token lifecycle, role propagation and access failure paths.

Explore SSO integration

Cloud & Hybrid Systems

Connected SaaS, cloud services, on-premise applications and hybrid data flows.

Review cloud integration risk

Evidence-Led Delivery

From dependency discovery to repeatable release confidence

Our process creates shared visibility across product, development, architecture, suppliers, DevOps and operations.

Discover

Confirm systems, stakeholders, release scope, business journeys and failure impact.

Map

Document interfaces, contracts, data flows, dependencies, environments and ownership.

Prepare

Define coverage, scenarios, test data, simulations, observability and acceptance criteria.

Execute

Test positive, negative, boundary, failure, recovery and complete workflow behaviour.

Automate

Embed stable service and contract checks into the appropriate delivery pipelines.

Assure

Report coverage, defects, residual risks, operational readiness and release recommendation.

Integration Quality Evidence

Know which interfaces are ready, which defects matter and what remains exposed

Reporting connects technical test results with affected transactions, systems, suppliers and business outcomes.

Dependency and interface coverage by business journey
Contract, data and workflow test status
Defects grouped by service impact and ownership
Failure-path, recovery and observability evidence
Residual risks and explicit release recommendation

Integration Assurance Overview● Release evidence updating

24interfaces mapped

91%critical scenarios passed

3material defects open

Website → CRM lead mappingPassed

Payment timeout reconciliationRetest

Duplicate event handlingOpen

Illustrative reporting only. Metrics, thresholds and release criteria are agreed for each engagement.

Why IDS Logic

An integration testing company with engineering context across the connected estate

Our QA specialists can work alongside developers, architects, data engineers, cloud teams and platform specialists to diagnose the cause of integration failures—not only record the visible symptom.

Business-journey focus

Testing follows the transactions and services that matter to customers, revenue and operations.

Independent assurance

We can test integrations built by IDS Logic, your internal team or another implementation partner.

API, data and platform depth

Coverage can connect contracts, data persistence, enterprise systems and complete user workflows.

Realistic failure testing

We validate retries, duplicates, unavailable dependencies and operational recovery—not only happy paths.

Automation with purpose

Regression and contract checks are selected for useful speed, stability and release feedback.

UK relationship and continuity

Work with IDS Logic teams in Leeds and London, backed by scalable multidisciplinary delivery capacity.

Relevant Connected-System Experience

Quality assurance across CRM, booking, ERP and multi-platform integrations

These examples show integration and testing work within wider delivery programmes. Detailed test coverage and measurable acceptance criteria are agreed for each engagement.

CRM & Portal Integration

ICA

A multi-platform transformation established reliable lead mapping, unified identity and real-time data exchange across the website, Salesforce, portal and Dynamics estate.

Salesforce field mapping
Website-to-portal workflows
SSO and identity continuity
Cross-platform regression

View case study

ERP-Aligned Commerce

SCHOTTLANDER

Extensive QA supported a large catalogue, ERP-fed information, account journeys and high-volume barcode ordering during a major Umbraco rebuild.

ERP data continuity
Account and pricing journeys
High-volume order scenarios
Release and performance assurance

View case study

Booking Integration Testing

JAB-BOX

Testing supported successive booking-partner changes, service integration and a website rebuild for a subscription-led fitness platform.

Booking workflow validation
Third-party integration changes
Pre and post-launch testing
Ongoing regression support

View case study

Words From Clients

Hessington Health is a national health screening and occupational health service provider. We have been scaling up our business activity aggressively over the past 12 months and our workflow/IT needs have changed significantly as we have grown. We instructed IDSLogic for their passion to support business in helping them to create efficient processes, which in the long term save time and money. Thery have start with getting a very granular understanding of the clients needs and then offer several solutions. They have helped us integrate Power Automate processes in our SharePoint system. They date flow works flawlessly within SharePoint which helps achieve grater data security, and process management. We have now instructed them to develop our Patient App. I can not recommend them enough.

Dr Harjeev Rai

CEO/Medical Director Hessington Health

IDS has become a true strategic development partner for all our digital work. We have found their technical expertise a perfect complement to our in-house creative and digital team and IDS has been highly dedicated to helping us meet our goals for growth. The Emma’s Diary channel continues to grow and our plans remain ambitious. We are pleased to have IDS Logic’s trusted support on our journey.

Gareth Huxtable

Director, Lifecycle Marketing

This was a very complex and multi-layered project with ambitious targets. IDS helped us define our requirements and made a real contribution to project delivery, demonstrating their development experience on major projects.

Chris Manko

Technical Solutions Architect, Lifecycle Marketing

The new site looks excellent. I’m very pleased with the results and with the quick responses during testing and UAT.

The LensPal

USA

IDS Logic has proved their expertise in timely project delivery and this helped us to a successful on-time launch. Our new website can now truly support our evolving business strategy to remain at the forefront of our sector.

Pickfords

We came to IDS Logic with a vision for our site. The team listened, understood our requirements and produced an attractive and functional website that led to positive results. It is really a great pleasure to work with them.

LFRA

I am really happy to have IDS Logic on board and have been very impressed with their speed of implementation and professional approach to their work. This has made our collaboration an enjoyable and extremely valuable partnership.

Pebble Grey

Integration Testing Across UK Industries

Coverage adapted to transaction value, dependency risk and operating model

We align test scope with your architecture, contractual responsibilities, risk profile and applicable organisational controls rather than promising automatic compliance.

Financial Services & FintechPayments, ledgers, identity, fraud controls, reconciliation and resilience.

Healthcare & WellbeingPatient workflows, sensitive data, identity, notifications and operational continuity.

Ecommerce & RetailPayments, stock, promotions, fulfilment, CRM, tax and marketplace connections.

SaaS & Cloud PlatformsMicroservices, subscriptions, tenancy, webhooks, identity and release pipelines.

Education & eLearningLMS, CRM, SSO, content, assessment, payment and learner-record integrations.

Manufacturing & DistributionERP, product, warehouse, ordering, finance and supplier data flows.

Professional ServicesCRM, portals, documents, billing, reporting and controlled client access.

Transport & LogisticsBooking, tracking, scheduling, warehouse, mapping and customer communications.

Make the Connections Release-Ready

Turn integration uncertainty into measurable release evidence

Share your systems, interfaces, planned change and highest-risk business journeys. We will identify the right testing scope and the evidence needed before release.

Call our UK team
+44 (0)1135 316 314

Email IDS Logic
[email protected]

Frequently Asked Questions

Integration testing questions, answered

For advice based on your architecture, suppliers, environments and release risks, speak directly with our integration testing team.

Ask an Integration Testing Specialist

What are integration testing services?

Integration testing services verify that software modules, APIs, databases, microservices and external platforms exchange data and coordinate business behaviour correctly. Testing focuses on boundaries between components, including contracts, mappings, sequence, authentication, error handling, state changes and the end-to-end workflows that depend on those interactions.

What is the difference between integration testing and system testing?

Integration testing concentrates on how two or more components communicate and behave together. System testing evaluates the complete application against wider functional and non-functional requirements. A robust quality strategy normally uses both, with integration tests exposing boundary defects earlier and system tests confirming complete user and operational journeys.

What system integration testing services does IDS Logic provide?

IDS Logic can provide integration strategy, dependency and interface mapping, API and web-service testing, microservice and contract testing, database and message-flow validation, ERP and CRM integration testing, authentication and SSO testing, resilience and recovery testing, automated regression, CI/CD integration, release assurance and post-deployment verification.

Can IDS Logic test integrations built by another supplier?

Yes. We can independently test integrations delivered by an internal team, software vendor, systems integrator or another development partner. We agree access, responsibilities, defect workflows, evidence standards and release criteria at the outset so assurance remains objective and practical.

Do you test APIs, microservices and event-driven integrations?

Yes. Coverage can include REST, SOAP and GraphQL APIs, microservices, webhooks, scheduled jobs, queues, topics and event-driven workflows. We test contracts, payloads, sequencing, idempotency, authentication, retries, duplicate events, timeouts, partial failures and observable business outcomes.

Can you automate integration testing in our CI/CD pipeline?

Yes. Stable and repeatable integration scenarios can be automated and connected to build or deployment pipelines. The approach may use API collections, service-level frameworks, contract tests, database checks and environment-specific data. Automated gates are designed around useful release feedback rather than maximising script volume.

How do you test third-party systems when they are unavailable?

Depending on risk and supplier constraints, we can use mocks, stubs, service virtualisation, contract tests and controlled simulators to validate expected behaviour. These tests are complemented by selected checks against the real service when access is available because simulated behaviour cannot prove every production dependency.

How do you test integration failures and recovery?

We design scenarios for timeouts, invalid responses, unavailable dependencies, rate limits, duplicate messages, delayed events, partial updates and interrupted transactions. Testing checks retries, queues, compensating actions, reconciliation, alerts, logging and the ability of operational teams to identify and recover failed work safely.

What deliverables will we receive?

Depending on scope, deliverables can include an integration test strategy, dependency map, interface and contract inventory, risk and coverage matrix, test cases and automated suites, environment and data requirements, defect and traceability reports, release-readiness assessment, residual-risk summary and post-release verification report.

How much do integration testing services cost?

Cost depends on the number of systems and interfaces, architecture, data flows, third-party access, environments, test-data needs, automation scope, performance and resilience requirements, release cadence and support needed during deployment. IDS Logic provides a clear scope and commercial proposal after an initial integration risk review.