# Changelog

What changed, when, and why.

*Verified 2026-10-25 · https://roitechnologies.net/changelog/*

| Date | Change |
| --- | --- |
| 2026-10-25 | Site launched: learn guides, use-case guides, best-of lists, migration guides, a hardware guide and calculators. The first ROI calculator was replaced the same day by four calculators: cost per screen, energy cost, storage and bandwidth, and screen size and viewing distance. |