Numerous financial institutions aspire to enhance their technological offerings to clients, yet they face challenges due to outdated systems and technologies. These banks invest heavily just to maintain their current operations, as the expenses associated with change are substantial, compounded by high operational costs stemming from a lack of process automation. Thought Machine aims to lay the groundwork for a transformative phase in banking through its innovative solution. Vault, a state-of-the-art, cloud-native core banking engine, has been designed from the ground up with a focus on being a cloud-first platform, completely free from legacy or outdated technologies. Developed entirely within Thought Machine, Vault ensures seamless integration due to its unified design approach. By employing a microservice architecture built around APIs, Vault encompasses a considerable range of functionalities essential for banking operations, while also allowing additional services from banks or third-party vendors to link through its APIs. This modern approach not only enhances efficiency but also paves the way for future advancements in the banking sector.