Enterprise architecture (EA) is a discipline that defines and organizes the components, relationships, principles, and standards of an organization’s IT environment. EA can help to align IT with business strategy and objectives, optimize IT performance and value, and manage IT complexity and change12.

One of the benefits of EA is that it can help to address the concern of duplicate IT applications and services across an enterprise. EA can help to identify and eliminate the redundancies, inconsistencies, and inefficiencies in the IT landscape, by providing a holistic and integrated view of the current and future state of IT. EA can also help to rationalize and consolidate the IT applications and services, by establishing a common framework, taxonomy, and governance for IT decision making. EA can also help to improve the integration and interoperability of IT applications and services, by defining the interfaces, protocols, and standards for data exchange123.

Some examples of how EA can help to address the concern of duplicate IT applications and services are:

EA can help to conduct an inventory and assessment of the existing IT applications and services, to determine their purpose, scope, functionality, quality, cost, and value. EA can also help to compare and contrast the IT applications and services across different business units, to identify the overlaps, gaps, or conflicts among them4.

EA can help to define and prioritize the business needs and requirements for IT applications and services, to ensure that they support the business goals and processes. EA can also help to evaluate and select the best IT solutions for each business need, based on criteria such as feasibility, suitability, scalability, security, compliance, etc5.

EA can help to design and implement a target IT architecture that eliminates or minimizes the duplicate IT applications and services, by using approaches such as application portfolio management (APM), service-oriented architecture (SOA), or cloud computing. EA can also help to plan and execute a migration strategy that ensures a smooth transition from the current to the target state .

EA can help to monitor and control the IT applications and services, by using metrics, indicators, and reports to measure their performance, availability, reliability, quality, and value. EA can also help to review and update the IT applications and services regularly, by using feedback mechanisms and continuous improvement practices .