To understand Azure Key vaults, think of a scenario like a backend connection to databases. The question is “Do we directly use connection strings in our code?”. Storing connection strings and other sensitive information directly in your code is generally not recommended. Instead, using environment variables or a configuration management system is a better approach. Similar to the backend scenario, Azure Key Vault allows you to implement this approach in a cloud-based environment. Azure Key Vault is a cloud-based service provided by Microsoft Azure that allows you to securely store and manage sensitive information such as secrets, keys, and certificates. It provides a central repository for managing and safeguarding cryptographic keys, secrets (like API keys or database connection strings), and digital certificates. Azure Key Vault is considered a better and more secure approach for managing secrets and sensitive configuration information in Azure-based applications including Synapse pipelines and Data Factory.