Microservices decoupling
We extract business logic from legacy systems and move it into modern architectures.
Legacy Systems Modernization for Critical Environments
We decouple monolithic architectures and refactor obsolete code to transform your technology core into scalable microservices, without interrupting business operations.
- COBOL
- Oracle
- PL/SQL
- .NET
- Java
- Python
- React
- Kubernetes
- 15 años en banca tier-1
- ISO 27001
- DORA-ready
What's included
Core capabilities
At Vermont Solutions, we tackle the deep reengineering of these systems, decoupling the monolith and transforming it into a modern modular architecture. We execute this transition in overlapping phases to guarantee zero service disruption.
PL-SQL refactoring and database optimization
We audit and rewrite inefficient queries and stored procedures.
In-memory cache and load decoupling
We implement cache systems such as Redis to absorb recurring requests.
Migration to cloud databases
We move monolithic platforms to managed solutions such as Azure SQL Database.
Real-world case
Kubernetes modernization at a tier-1 bank
Migration of a transactional core from legacy infrastructure to a Kubernetes cluster with 6 production environments. Operational continuity throughout the cutover, with no service interruptions perceived by the customer.
REAL CASE · TIER-1 BANKING
99,9%
sustained availability on the Kubernetes cluster during the migration
6 environments
production environments migrated with no service interruption
Strangler fig · verified functional parity · DORA Art. 28 aligned
Related products and services
Complement the modernization
Baram
Our own platform to accelerate the transition of PL/SQL and legacy procedures toward modular architectures.
Discover Baram →Technical talent outsourcing
Strengthen your team with engineers specialized in legacy modernization, embedded in your processes and under your governance.
View talent model →Do you have a legacy core slowing down your regulatory or product roadmap?
Book a technical session →Frequently asked questions
How do you migrate a banking COBOL system without disrupting operations?
COBOL migration in banking requires the strangler fig pattern: replacing modules incrementally while the legacy system remains operational in parallel. Vermont Solutions implements a coexistence period with output comparison between the legacy and new systems, ensuring functional parity before each cutover. The key is to start with modules of low operational risk and scale progressively toward the transactional core.
What does migrating from Oracle to PostgreSQL in a regulated financial environment involve?
An Oracle-to-PostgreSQL migration in banking involves: compatibility analysis of stored procedures and proprietary Oracle functions, adaptation of the partitioning model, handling of differences in transaction behavior, and validation under DORA and applicable banking regulation. Vermont Solutions manages the migration while maintaining availability SLAs and the financial regulator's audit requirements.
How long does it take to modernize a legacy banking system?
Vermont Solutions structures modernizations in 90-day phases with value-delivering outputs in each phase. A full core banking system migration can take 18-36 months depending on the complexity of the COBOL system, the volume of accumulated business logic and the integration requirements with satellite systems. The first functional module on the new platform is typically available within the first 90 days.
What is the strangler fig pattern in a legacy migration?
The strangler fig pattern modernizes a legacy system incrementally: functionality is gradually extracted into new services that coexist with the old system until it is emptied and decommissioned, avoiding the high-risk 'big bang' replacement. It is the approach Vermont Solutions prioritizes in tier-1 banking because it preserves operational continuity and allows each step to be reverted.
How does DORA affect a legacy systems modernization project?
DORA (Regulation (EU) 2022/2554) requires financial entities to ensure digital operational resilience: ICT risk management, service continuity and control over critical providers (Article 28). In a legacy modernization it requires maintaining traceability, reversibility and continuity throughout the migration, and documenting third-party dependencies. Vermont Solutions aligns its migrations with these requirements from the design stage.