GitHub CLI is not a SaaS. It's a commandline utility.
That doesn't mean it doesn't have usage patterns or other things telemetry would be useful for. And, at the rate these tools are being updated (multiple times a week, multiple times a day in some cases), they practically _are_ SaaS.
That doesn't mean it doesn't have usage patterns or other things telemetry would be useful for. And, at the rate these tools are being updated (multiple times a week, multiple times a day in some cases), they practically _are_ SaaS.