System Integration & Central Platforms
Middleware and central systems that feed several applications from a single source of truth, at public-sector scale.
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System integration is feeding applications that run independently from a single source of data. GG Tech's System Integration & Central Platforms service builds that layer: the shared data model, the integration layer above it, the gateways to outside institutions, and a staged cutover that keeps the old system serving until the new one is ready. We do not sell a packaged product — our angle is the layer that connects the products you already run.
| Typical team | 1 architect + 2 developers + 1 tester |
|---|---|
| Calendar band | 8–24 weeks |
| Phase split | 20% current-state analysis · 30% shared data model · 35% integration layer · 15% staged cutover |
What grows the budget
- Number of source systems
- Data quality in the sources
- Zero-downtime requirement
- Gateways to outside institutions
Signs of underbudgeting
- No rollback plan
- Data ownership undecided
These are GG Tech Teknoloji planning bands, not a quote; starting prices are on each service page. Every project is different, so the bands are deliberately wide; they assume a senior, focused team and typical scope, and your project is estimated individually.
How do we work?
- 1
Current-state analysis
An inventory of the source systems: who owns which record, where the same data is written twice, and which integration already exists in a spreadsheet.
- 2
Shared data model
One model every application reads from, plus the mapping from each source system into it. The data dictionary is written here, not at the end.
- 3
Integration layer
The middleware itself: API contracts, idempotent writes, conflict rules, and the gateways to outside institutions.
- 4
Staged cutover
The new system is stood up on its own server and verified in a test environment while the old one keeps serving. The switch happens inside a planned window, with a rollback path that stays open.
What do we deliver?
System Integration & Central Platforms
Proof from production
6
applications fed from one source
1
hour cutover window
0
minutes of downtime
The application count is read from the Çekmeköy Municipality codebase; the cutover window and downtime come from the team that ran the cutover.
Read the case study: Çekmeköy BelediyesiRelated services
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Work we delivered with this service
Last updated:
Let's talk about your project, we reply the same business day.
A 30-minute intro call: scope, timeline band and the right team.
Clutch 5.0 · team of 20 · Çekmeköy Municipality, NSC Soft, UKX
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