Legacy modernization

For many companies, the existing legacy systems, architectures and processes are slowing down their business capabilities. In fact, IT managers responsible for legacy applications face challenges such as:

  • Inflexible and closed architectures not integrated with modern platforms
  • Running business-critical applications on potentially unsupported hardware and software
  • High cost of maintaining and upgrading legacy systems
  • Tightly coupled business processes/applications preventing the company from adapting to changing business requirements
  • Long and complex development lifecycles
  • Shrinking labor pool expertise on legacy systems

We bring expertise, developed through years of experience, into the process of modernizing and migrating legacy systems, architectures and processes. In our Modernization projects, we pursue the following benefits:

  • Reduced cost: The modernization process lowers the high maintenance cost of existing legacy platforms, resulting in substantial savings in the cost of running a business.
  • Improved flexibility: Flexible IT environments are created that are capable of interacting with contemporary platforms such as web-enabled software. This flexibility allows the alignment of IT systems to dynamic business needs.
  • Minimized disruption. The use of an Axional framework and tools combined with Deister‘s expertise reduces the risk involved in legacy modernization projects.

From experience, we are familiar with the complexity and costs involved in the migration of a legacy application and the problems associated with this process when inappropriate methods are employed. This is why we always check with a potential customer that the use of our tools and methods can offer a significant advantage.

Project strategies

We follow a different approach, depending on each application and its environment:

  • Re-engineering: Rebuilding legacy applications with the same or enhanced business functionality on new platforms with a Service-Oriented Architecture (often known as SOA integration and enablement). In our projects we use the powerful tool Axional Studio, which helps our teams to achieve greater productivity and to implement a new system that meets the business needs.
  • Re-hosting: Re-architecting to a new environment. The legacy applications are deployed on a modern platform, reducing the maintenance cost of applications on legacy platforms. Our Database Migration tools and framework facilitates the data migration regardless of data model complexity and the diversity of data bases. Combined with the Axional Studio development framework, a substantial reduction in project costs and schedules can be achieved.
  • Data Modernization: Creating a new channel to access corporate data using a service-oriented framework, opening the previously closed architecture legacy systems to provide new access capabilities. Our Database Migration tools and framework allows for robust deployment of data access channels in a short time span.
  • Package deployment: Legacy applications are replaced with modern, off-the-shelf packages or ERP software.

The right mix of approaches is determined by the business needs driving the modernization, potential risks, time constraints and the nature of the source environment and legacy applications. Our offer includes Axional ERP a comprehensive ERP package build on a Web-native application suite.


The purpose of a modernization methodology is to document techniques that allow preservation of existing business functions and to align those techniques with standard software development practices.

Our methodology involves the following main steps:

  • Assessment
  • Legacy Understanding. Identify the business drivers
  • IT effectiveness assessment.
  • Application Portfolio Analysis: Obtain a clear view of the current state of the computing environment
  • Inventory of existing applications and how they interact.
  • Define overall modernization strategies and identify key applications that are good candidates for each approach (Re-hosting or re-platforming versus a replacement with packaged applications)
  • Description of existing Business & Technology architecture
  • Examination of applications at the program level. Determine code complexity, data exchange schemas, and specific interaction within a screen flow.
  • Definition of the new architecture
  • Modernization Strategy. Business case justification
  • Deployment
  • Modernization Plan (management, risk mitigation, execution, quality,…)