AWS – AWS Budgets now offers Daily Granularity for Cost & Usage Budgets
AWS Budgets allows you to monitor your cloud costs and usage, as well as utilization and coverage for your purchased Savings Plans and Reserved Instances. You can receive notifications when costs and usage exceed (or are forecasted to exceed) your budgeted thresholds, and/or when your utilization or coverage falls under your target thresholds.
Read More for the details.