Solution

Integration Layer

Integrations are invisible but critical. When they work — systems talk. When they don't — data is lost and people copy from window to window.

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The integration layer is the most invisible and most critical part of a company’s IT landscape.

When integrations work, nobody thinks about them. Data appears in the right system, reports reconcile, processes flow smoothly. When integrations break or don’t exist — people copy data from window to window, reports don’t reconcile, and connecting a new system turns into a six-month project.

A typical picture in a large company: 20 systems connected by dozens of point integrations. Each unique, without documentation, without monitoring, without error handling. Adding one more system requires writing integrations with every existing one.

The right approach — an integration layer (ESB or API Gateway), which each system connects to once. Standard protocols, unified references, monitoring, error handling. Adding a new system — weeks, not months.

Target Model

How It Should Work

A unified bus (ESB/API Gateway) should sit between systems, providing data exchange via standard protocols. Data is entered once and available to all systems. References are synchronized. Failures are detected and handled automatically.

ESB / API Gateway

Unified data bus

MDM (Master Data Management)

Adapters for legacy systems

Integration monitoring and alerting

API portal and documentation

Data transformation and mapping

Message queues (message broker)

Проблемы

Где обычно все ломается

Data entered manually into 3–5 systems — errors and discrepancies

Point-to-point integrations — a web impossible to maintain

No integration monitoring — failures discovered by accident

References not synchronized — one client appears differently in different systems

File-based integration instead of API — delays and data loss

No integration documentation — knowledge only in the developer's head

Every new system takes months to integrate

Consequences

What This Leads To

⚠ Data doesn't match across systems — no single source of truth

⚠ Connecting a new system takes months instead of weeks

⚠ Manual data transfer — dozens of man-hours daily

⚠ One integration failure cascades into broken business processes

⚠ Analytics impossible — data is scattered and contradictory

My Approach

How I Approach the Challenge

I draw a map of systems and data flows between them: what's integrated with what, how (API, file, manual entry), how frequently, who's responsible for each integration. The picture is usually alarming — dozens of point connections with no unified architecture.

Recognize your situation?

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Team

How We Work

My Role

Audit the integration landscape, design the target integration architecture, define data exchange standards, oversee key integrations.

Team Role

The team deploys the integration platform, develops adapters for each system, configures message routing, implements monitoring and alerting.

Important

Key Considerations for Implementation

🔎 Point-to-point integrations don't scale. ESB/API Gateway is mandatory for 5+ systems

🔎 Unified references are the foundation. Without them, integrations have no value

🔎 Integration monitoring is not optional. Failures should be detected in seconds

🔎 API documentation is mandatory. Without it, connecting a new system is a quest

🔎 Idempotency and retry are mandatory for every integration

Results

What Results to Expect

✓ Connect a new system in weeks, not months

✓ Data entered once — available in all systems

✓ Real-time monitoring — failures detected in seconds

✓ Unified references — one truth for all departments

✓ Documented APIs — any developer can connect

Практика

Cases for This Solution

banking

Onboarding Automation at a Retail Bank

A classic pain: the bank attracts SME clients but account opening takes 3–5 days — and 30–40% of applicants leave without waiting. The cause is not technology but organizational gaps between departments.

SME onboarding time reduced from 5 days to 4 hours

Applicant dropout during onboarding reduced by 62%

Manual data entry into core banking reduced by 85%

telecom

Dealer Portal for a Telecom Operator

Common problem: the operator sells through 200–300+ dealer points but can't see real sales and pays commissions based on dealer-reported data. Result — 8–12% fraud and loss of control. Solution — a portal connected to billing.

100% of sales captured in the portal in real time

Ghost subscriber fraud reduced by 78%

Commission calculation time reduced from 5 days to automatic

government

Government Services Portal with Five-Agency Integration

Citizens visit 3–5 agencies for a single permit, collecting dozens of certificates. We explain why a 'one-stop shop' doesn't solve the problem and how to build real inter-agency integration — from 3 weeks to 2 days.

12 government services available online through a unified portal

Average service delivery time — 2 days instead of 3 weeks

Citizens submit applications from home — 0 visits to agencies

FAQ

Frequently Asked Questions

ESB or API Gateway?

ESB — for complex transformations and legacy integrations (files, protocols). API Gateway — for microservices and REST APIs. Often both are needed. Choice depends on the current landscape.

Can legacy systems without APIs be integrated?

Yes. Adapters are developed for legacy systems: via database, file exchange, screen scraping. Not ideal, but it works and allows the system to be included in the overall contour.

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