Enterprise IT governance is the process of ensuring that IT supports the business objectives and strategies of the enterprise, and that IT investments and resources are aligned with the enterprise's needs and priorities1. The effectiveness of enterprise IT governance can be measured by the extent to which the business objectives are achieved through IT-enabled initiatives and services2. An IT balanced scorecard, business objectives definition, and IT processes measurement are all tools or activities that can help implement and monitor enterprise IT governance, but they do not demonstrate its effectiveness by themselves345. Reference:= IT Governance: Definition, Frameworks, and Best Practices - InvGate The keys to effective IT governance in the digital era | CIO Defining IT Governance and Its Roles for Business Success - ISACA Governance of Enterprise IT - The Institute of Internal Auditors or The IIA Holistic IT Governance, Risk Management, Security and Privacy ... - ISACA

A business case evaluation is the best input for prioritizing strategic IT improvement initiatives because it provides a clear and objective assessment of the costs, benefits, risks, and value of each initiative. A business case evaluation helps to compare different options and select the ones that align with the organization's goals, strategy, and budget. A business case evaluation also helps to justify the investment and secure the support and approval from the stakeholders.
A business dependency assessment is a process that identifies the critical business functions and processes that rely on IT services and resources. It helps to determine the impact of IT disruptions or failures on the business continuity and recovery. A business dependency assessment is useful for IT risk management and disaster recovery planning, but not for prioritizing strategic IT improvement initiatives.
A business process analysis is a method that examines the current state of the business processes, identifies the gaps, inefficiencies, and opportunities for improvement, and proposes solutions to optimize the processes. A business process analysis helps to streamline the workflows, reduce costs, increase quality, and enhance customer satisfaction. A business process analysis is valuable for IT process improvement and automation, but not for prioritizing strategic IT improvement initiatives.
A business impact analysis (BIA) is a technique that evaluates the potential consequences of a disruption or disaster on the organization's operations, assets, reputation, and stakeholders. It helps to estimate the financial and nonfinancial losses, recovery time objectives, recovery point objectives, and criticality levels of each business function and process. A BIA is essential for IT business continuity management and contingency planning, but not for prioritizing strategic IT improvement initiatives.
References := IT Strategy Examples & Best Practices - IT Companies Network, How to create an IT strategy plan section. What is an IT Roadmap? | Benefits and Roadmap Examples - ProductPlan, How to Prioritize Your IT Roadmap section. 7 ways to make IT operations more efficient | CIO, Use data to increase visibility section.