landing page with 2 options or 2 different sites

Im working on a software as a service platform to monitor remotely devices. The project was targeted before to only aged care. And the website, landing page, reflects that.

The offering now expanded to include child care.

Is the same platform but targeted to different users, where the app will look the same for the user, but the companion app is different for the patient.

My question is if is better to have 2 different landing pages

(2 URLS, mySite.com and mySite2.com)

, or have one landing page that the user can select the solution, then gets redirected to that specific website ?.

(mySite.com --> children.mySite.com; seniors.mySite.com )

Thanks!