An Enterprise System is designed to integrate and manage the core business processes of an organization across different departments within a single unified digital platform. It enables seamless information sharing, coordination, and communication across functions such as finance, human resources, supply chain, sales, and customer service. By centralizing data and processes, enterprise systems help eliminate silos, reduce duplication of effort, and ensure that decision-making is based on accurate, real-time information.

Option A (Project management) is incorrect because project management software is intended for scheduling, task tracking, and collaboration on specific projects, not for cross-departmental integration of business processes.

Option C (Transaction processing system) is incorrect because a TPS is designed to handle day-to-day business transactions efficiently, such as order entry or payroll, but does not integrate operations across departments.

Option D (Data analysis platform) is incorrect because while data analysis platforms provide insights and support decision-making, they do not unify business processes or coordinate operations across multiple departments.

The Enterprise System, often in the form of Enterprise Resource Planning (ERP), is the correct solution because it streamlines operations, promotes cross-departmental collaboration, and supports integrated decision-making in line with organizational strategy.