Go where your audience already watches. The single highest-leverage signal in your platform decision is where your existing followers, subscribers, and email-list members already spend their attention. Migration friction kills funnel conversion. Every minute spent convincing your audience to install a new platform app is a minute lost to creating content.

The audit: open your existing platform analytics. Where is your audience? If you have a YouTube channel with a meaningful subscriber base, your live audience is on YouTube before they are anywhere else. If your TikTok is your primary discovery channel, your live audience is on TikTok Live. If your Instagram drives most engagement, the path to live likely runs through Instagram Live first or a Twitch with strong cross-promotion to Instagram.

The principle: the easiest way to convert an existing follower into a live viewer is to give them a live destination on the platform they already use. The path of least friction wins. Pick the platform your audience already uses, every time.