A CTO's Framework for Cutting Infrastructure Costs

Every recurring cost falls into one of three categories: running cost that scales with usage, fixed cost that does not, and insurance cost that only pays off during an incident. Treating all three the same way is how teams end up canceling a backup service to save a few hundred dollars a month and regretting it during the next outage.

Running costs are the ones to optimize continuously. Fixed costs are the ones to renegotiate or replace on a schedule. Insurance costs are the ones to leave alone unless you can prove, in writing, that the risk they cover has genuinely gone away.

Say a monitoring platform costs $2,000 a month, an engineer estimates six weeks to build an equivalent internally, and that engineer is fully loaded at $150,000 a year: six weeks of their time runs roughly $17,000, before counting the ongoing maintenance a purchased tool would already include. The math rarely favors building unless the tool is core to what you sell, not something every company in a similar position also needs, and the maintenance cost tends to recur every year while the purchased alternative's price stays comparatively flat.

The cases where building wins are narrow: when the commercial option genuinely does not fit your workload, or when the capability is part of your product itself, not just infrastructure supporting it. Outside those two cases, the build option usually loses even when the sticker price looks appealing, because the six-week estimate rarely accounts for the ongoing time spent patching and extending it.

The recurring offenders are rarely the ones leadership expects:

• Unused seats on per-user tools nobody has offboarded
• Overprovisioned compute sized for a traffic spike that happened once
• Duplicate tools doing the same job because two teams each picked their own
• Data transfer costs between services that could sit in the same region
• Log retention set far longer than compliance actually requires

An audit of these five categories alone usually finds more savings than a broad renegotiation push, and it takes a fraction of the time.

Before canceling a fixed-cost tool outright, ask what a straightforward renewal conversation could do to the price. Vendors selling to growing companies expect churn conversations, and a plain request tied to your actual usage numbers often gets a real discount without anyone having to migrate off a tool the team already knows how to use.

Time these conversations around your renewal date, not around a budget crunch. Asking for a better rate with three months of runway before a contract ends puts you in a stronger position than asking the week before it auto-renews, when the vendor knows you have less room to walk away.

A cost cut that lands on engineers as a surprise, especially one that removes a tool they rely on daily, erodes trust fast and often gets quietly worked around. Involve the team that uses a tool in the decision to cut it, and give them the actual number: what it costs, and what the alternative would look like.

When a cut does land badly, say so and adjust. A cost optimization program that nobody trusts stops getting honest input about what is actually necessary, which defeats the purpose.