Amazon DynamoDB

Amazon DynamoDB is a serverless, fully managed, distributed NoSQL database delivering single-digit millisecond performance at any scale, with zero infrastructure management, instant scaling and pay-per-request billing.

Having no maintenance windows, no upgrades and no cold starts is the operational claim, and it is a stronger statement than it appears. Most managed databases still require a version upgrade at some point, which means a scheduled window, a rehearsal and a rollback plan, and most serverless data services have a cold start that shows up as a latency spike after idle periods. Removing both changes what an on-call rota has to cover.

Global tables are the resilience story, offering multi-region, multi-active operation with up to 99.999 percent availability and multi-region strong consistency, so an application reads the same data from any region. That combination allows a zero recovery point objective, meaning no committed write is lost in a regional failure, which is a genuinely demanding guarantee and the reason this feature exists.

Native vector search has been added, making DynamoDB suitable for agentic applications needing semantic retrieval alongside their operational data rather than in a separate vector store. The security controls and compliance certifications are positioned for governments, global banks and other high-sensitivity organisations. Billing is by request and storage rather than plan tiers, so cost tracks use directly, with an AWS Free Tier available to start.