On-Premises Database
An on-premises database is a database system that is installed and run on an organization's own physical hardware and infrastructure, typically within its own data center or server room. It involves managing the database software, servers, storage, networking, and security in-house, providing full control over the environment. This contrasts with cloud-based databases where resources are hosted and managed by third-party providers.
Developers should consider on-premises databases when working in industries with strict data sovereignty, security, or compliance requirements (e.g., finance, healthcare, government) that mandate physical control over data. They are also useful for organizations with existing infrastructure investments, high-performance needs where latency is critical, or when operating in environments with limited or unreliable internet connectivity. However, this approach requires significant upfront capital and ongoing maintenance expertise.