How One CTO Cut Cloud Costs by Rethinking Commitments

Tech Leadership with Fexingo: Engineering Managers, CTOs, and Technical Leadership Conversations · Jun 8, 2026 · 6m · transcript

Episode 38 of Tech Leadership with Fexingo. Lucas and Luna explore how a real CTO saved forty percent on cloud bills by replacing reserved instances with convertible commitments and usage forecasting. They walk through the actual math: moving from a one-year fixed reservation to a dynamic portfolio of convertible RIs and Savings Plans, using a rolling forecast of compute demand. Lucas explains the three levers the CTO pulled: converting underutilized reservations, layering Savings Plans on top, and rightsizing instances based on six months of data. Luna pushes back on whether this works for…