One angle that tends to get underweighted in cost optimization guidance is the organizational side: the gap between who provisions resources and who sees the bill. In most teams, engineers deploy infrastructure and finance sees a monthly invoice. Without a feedback loop that connects a specific resource back to a specific team and cost, the recommendations stay theoretical. Budget alerts help, but only if the alert goes to the person who can actually act on it. not just a billing admin.
Reservations and Savings Plans are frequently cited as the highest-ROI action, and that's true, but the commitment decision is only as good as the utilization tracking behind it. Teams that buy RIs without a quarterly utilization review often end up with underutilized reservations they then try to exchange or refund, losing the simplicity benefit entirely.
It's also worth noting that Azure Hybrid Benefit for Windows Server and SQL is consistently underused, particularly on VMs that were lifted-and-shifted without checking existing license coverage. For a ground-level view of what's idle, oversized, or in the wrong storage tier right now, Prunr (http://prunr.cloud) runs a subscription scan in under 30 seconds and gives you the exact savings number per finding.