Legacy & Modernisation
Connecting and modernising legacy and on-premises systems
Reaching the systems inside your network, and replacing the ageing ones safely, is the heart of nVisionIT’s heritage. We were South Africa’s foremost BizTalk integration partner, and that institutional knowledge is exactly what makes the move to Azure Integration Services low-risk.
Old, business-critical, and poorly documented
Many estates are ageing, mission-critical and thinly documented. Two challenges recur: how to connect to on-premises and legacy systems without compromising security, and how to modernise them without a risky big-bang rewrite.
Both are solvable, with the right connectivity model, a reversible modernisation pattern, and a migration method proven on award-winning programmes.
Reach on-premises systems, with no inbound firewall ports
The Azure on-premises data gateway opens a secure, encrypted, outbound-only tunnel between cloud Logic Apps and on-premises data: no inbound ports, no VPN.
On-premises data gateway
Outbound-only secure channel to on-prem databases, files and line-of-business systems: the simplest way to let cloud workflows read and write inside your network.
Logic Apps hybrid (Azure Arc)
Run the Logic Apps runtime on-premises for local processing, low latency and data residency, extended to virtually any Kubernetes environment: cloud, on-prem or edge.
ExpressRoute / VPN
Private network connectivity where sensitive or high-throughput links demand it.
1,400+ connectors
Enterprise, SaaS, legacy and mainframe systems out of the box, including IBM MQ and SAP.
The Strangler Fig pattern
Rather than replace a legacy system in one risky cut-over, we introduce a façade between the client, the legacy system and the new one.
The façade routes some requests to the legacy system and others to new Azure services. Functionality shifts across incrementally until everything runs on the new implementation. Then the legacy system is decommissioned and the façade removed. Consumers keep using the same interface throughout, unaware the migration is even happening.
The payoff: migration risk drops because teams move at a pace that suits the estate. Each increment delivers value, and there is always a working system.
A pragmatic, low-risk migration path
BizTalk Server has reached end of life, with mainstream support ending April 2028. Microsoft recommends migrating to Azure Logic Apps (Standard), and existing maps, schemas, rules and custom code can be reused to accelerate the move. We apply our proven, test-led method, exactly as we did on award-winning programmes.
Assess & catalogue
Every orchestration, schema, map, adapter, rule, component and database, with no changes to live systems.
Map to AIS
Each component to Logic Apps Standard and the right supplementary services, modernising dated designs, reusing maps, schemas and rules.
Build & test side-by-side
The new implementation runs alongside BizTalk; every component has test cases; pre-production is cut over first.
Cut-over & decommission
Production cut-over is fully roll-back-able; BizTalk is retired component by component.
Organisations with complex BizTalk estates typically plan a full migration programme of this length, sequenced so that each component delivers value as it lands, never a single high-stakes switch.
Modernise gradually, not wholesale
For IBM mainframe and midrange systems, a data-first technique lets message queues such as IBM MQ work with Azure services, supporting gradual modernisation through Logic Apps rather than a wholesale replacement.
SAP estates integrate through dedicated connectors for trade-document and master-data exchange, the same pattern nVisionIT used to deliver two-way SAP trade-documentation integration with zero rejections.
The stack
Let’s talk integration
Book a discovery workshop to map your integration estate, and see how a proven foundation lets you deploy solutions and accelerators safely, at speed.