Application Modernization:

Legacy systems typically define and control a majority of organizations. In today’s business environment, online information sharing plays a key role in extending and accelerating business activities. Organizations that can effectively leverage their legacy systems are best positioned for success in the new business world.

Businesses today require open and direct access for efficient technological solutions. The value of legacy systems lie in the knowledge contained within. This knowledge is not just the massive amounts of data captured by and accessible through the legacy system, but also the business process evolved over time. The new role of legacy systems today is to provide the business capabilities on open and distributed technological architecture for global access of information.

Infotech Global’s legacy application services retain the business process knowledge embedded in the systems. Our services also enable those systems to work with new open applications such as re-engineering legacy systems compounding component based systems, web enabled systems, ERP systems etc. Our approach is to make ordinary inflexible systems openly accessible. Infotech Global’s legacy application services team applies to a variety of approaches.

One approach ensures that the existing application flow remain intact. This enables existing business functions to be accessed through a new interface. Techniques include Wrapping and Screen Scraping. We create detailed front-ends to legacy systems that handle mapping of client requests to legacy functions. These solutions are tactical, meaning they quickly enable a legacy application to reach a larger number of users. These approaches address and resolve business issues, allowing time to rectify longer term challenges.

Another approach includes modification of the legacy code. Business functions are separated from workflow and implemented as components that provide specific business services. We address the challenges to this approach by applying "Top-Down" and "Bottom-Up" analyses. We conduct Bottom-Up analyses using custom-built and Off-The-Shelf applications allowing us to minimize and reducing potential errors in the systems.

Infotech Global ensures that the following corner stones are kept in mind while providing a legacy application service:

• Distributed Architecture: Legacy systems intended to run on a single platform to current distributed, platform independent technologies such as JAVA, .NET, CORBA resulting in more portable and scaleable solutions.
• Reusability: Changing legacy systems are optimized to perform functionality in a predefined structure. The businesses today in the global market call for frequent change in functionality implementation that demand fresh development in legacy systems.
• Openness: Typically legacy systems are proprietary working on limited platforms such as IBM mainframes, Bull, and Fujitsu systems. These operate with proprietary O/Ss transaction protocols. We enable these systems to run on open architecture platforms.

Click the below links to explore Our Legacy Applications Services:

• Legacy Modernization and Re-engineering (LMR)
  Infotech Global's legacy modernization and reengineering techniques require an Assessment Study leading to an early view of system inventory and functional limitation of the existing legacy system.
  

  This enables the decision-making process about the future road map of the application viability and usability. Further, through Legacy Comprehension techniques our team mines the business rules hidden deep inside the legacy code.

  This allows a complete solution reengineering effort to unchain the legacy application from legacy architecture into a distributed architecture, with new technology paradigms giving the necessary speed and flexibility to readily respond to dynamic business needs.

  Alternatively, we can also develop a web-enabled solution aided with screen scraping using a wrap around technique. This will ease the navigation of the specific application with a newly web-enabled interface. The existing legacy system is kept intact with all the inherent business logic. This solution gives a couple of major benefits to the clients in terms of security, user friendliness, turnaround-time and cost. As the application is kept intact the security subsystem either built in the application or system specific remains intact. This reduces the possible risks of security breach for mission-critical systems. The web enabled interfaces uses Graphics and other visual components to enhance the look and feel of the system. This in turn improves the usability of the system.

• Legacy Application Migration and Porting (LMP)
  Infotech Global's migration & porting services provide platform rationalization in the form of upgrades or the complete switching over to a new platform.
  

  This encompasses the conversion or upgrades in platform, language and database. In migration, application logic is not changed. However, it may trigger off changing system calls, I/O statements, peripheral handling mechanisms etc. The key factors we keep in mind during migration are impact assessment and degree of process automation. Depending on the findings of the Assessment study a combination of migration and re-engineering may be required. Infotech Global emphasizes on the maximization of tool usage, however the degree of automation, which can be achieved, depends also on the following factors:

  • Source and target data stores
  • Compatibility of certain keywords in source and target languages
  • Source and Target  operating systems
• Legacy Application Maintenance & Support (LMS)
  Infotech Global's legacy maintenance and support service involve the repair of defects that prevent an application from accurately processing data or producing correct results.
  

  It includes production problem fixes and repairs to abnormalities that interfere with the completion of a process.

  We also ensure that ongoing enhancement of applications are done to meet changing business requirements. This ensures applications evolve to keep pace with constant change, whether market-driven, technology-driven or regulatory in nature. Our services are focused on the repair of application defects to minimize the risk of recurring problems undiscovered thus far.

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