Secrets management is crucial for protecting sensitive data in software development, as a single exposure of an application secret can have catastrophic consequences. As teams grow, secrets management solutions become increasingly important to scale and meet new requirements. Open-source solutions like Hashicorp's Vault or Mozilla's SOPS are highly customizable and often chosen due to their upfront cost-effectiveness. However, they require engineering costs for deployment and maintenance. Managed secret management systems, such as Doppler, offer a user-friendly and easy-to-integrate solution with features like key rotation, least privilege, and audit logs, making them an attractive option for teams that need scalability and security without the overhead of managing their own secrets. When choosing a secrets management solution, it's essential to consider factors such as cost, scalability, and feature requirements to find the best fit for the team's needs.