How Timestream Actually Bills: A Breakdown for Engineers

Timestream can look simple on the bill until you break down the line items. Most teams think in terms of "stored data," but Amazon Timestream for LiveAnalytics is billed across multiple meters that move independently. If you only watch one number, you can miss where most of the spend actually comes from. First: Know Which Timestream Product You Are Using AWS now has two Timestream offerings: Amazon Timestream for LiveAnalytics (serverless, billed by writes, query compute, memory store, magnetic store) Amazon Timestream for InfluxDB (managed InfluxDB, billed by DB instance-hours and storage) This post focuses on Timestream for LiveAnalytics , where most billing misunderstandings happen. The LiveAnalytics Billing Model (What Actually Ticks) For Timestream for LiveAnalytics, AWS charges separately for: Writes : billed by amount of data written (rounded to nearest KiB), often shown in pricing examples as a per-million 1 KiB write unit. Queries : billed by Timestream Compute Units (TCUs) co