Credit monitoring has become an essential part of digital banking systems, allowing financial institutions to track changes in a customer's credit history in real time. This review explores how credit monitoring services are implemented through modern information technologies, focusing on their technical architecture, integration methods, and practical applications. The article describes typical system components such as event-driven APIs, data processing modules, and real-time alert engines. Special attention is given to how these systems are embedded into existing banking infrastructure and how they help banks automate risk analysis and improve customer communication. The paper also outlines use cases where credit monitoring has supported early identification of risk, improved product pre-approval processes, and enhanced loan portfolio management. Implementation challenges, including data privacy, interoperability, and regulatory compliance, are discussed from a technology perspective. This review provides a structured overview of how credit monitoring functions as a key part of decision-making systems in banking and highlights the growing role of IT in shaping responsible and timely credit management.