Buy for an owner
Every tool needs a named human who opens it as part of their week. “The security team” is not a name. If ownership is unclear at purchase, neglect is already scheduled.
Write the weekly habit before you sign: who triages alerts, who tunes rules, who reports exceptions. If that staffing does not exist, buy less or hire first.
Fit the path of work
Engineers live in tickets and pull requests. Analysts live in queues. If your new platform demands a separate pilgrimage to a different UI for every decision, people will route around it.
Prefer tools that meet the work where it happens, even if the feature list is shorter. A mediocre control that runs beats a perfect control that waits for motivation.
Integrate or expect neglect
SSO, ticketing, identity sources, and deploy hooks are not nice-to-haves. They are how the tool enters muscle memory. Unintegrated shelves collect dust and then renewals.
Budget implementation hours beside licence cost. A year of unused seats is more expensive than a smaller product that went live.
Measure use, not logos
Track active users, alert acknowledge times, rule changes, and whether findings become tickets. Logo slides for customers are a side effect, not a success metric.
At renewal, ask what breaks if you cancel. If the honest answer is “a dashboard we open for auditors”, you already know what to do.