HashiCorp Vault and Doppler are two different approaches to secrets management, catering to organizations with varying needs. Vault offers a flexible, customizable solution for large enterprises with strict compliance requirements, but it requires significant resources and infrastructure management. In contrast, Doppler provides a cloud-native, convenient, and developer-friendly approach, eliminating infrastructure complexity and focusing on rapid development and operational simplicity. Both platforms prioritize security, but their approaches differ significantly, with Vault providing control over encryption algorithms and key rotation schedules, while Doppler implements industry-standard practices for automatic key rotation, standardized encryption, and secure infrastructure. Ultimately, the choice between Vault and Doppler depends on the organization's priorities, with Vault excelling in large enterprises requiring complete control and Doppler offering a compelling alternative for organizations prioritizing rapid development and operational simplicity.