In the evolving landscape of financial services, banks are increasingly merging observability and security to bolster operational resilience, minimize risk, and reduce costs. By integrating these traditionally separate functions, banks like Wells Fargo and Bank Leumi are leveraging platforms like Elastic to gain comprehensive insights and respond swiftly to threats, thus enhancing system reliability and customer trust. As regulatory demands grow, exemplified by the EU's DORA, and technological threats become more sophisticated, unified platforms that consolidate system performance and security monitoring are becoming crucial. Elastic's comprehensive observability platform enables financial institutions to transform observability into a strategic advantage by combining real-time monitoring with business data, allowing for prioritized, impact-driven responses to system issues. This holistic approach not only enhances threat detection and issue resolution speeds but also significantly cuts monitoring costs, underscoring the importance of unified systems in achieving operational resilience.