Usually it's mainsite.com for the marketing site, and then app.mainsite.com for actual production, or if you have multiple it'll have the product name, like coo

Usually it's mainsite.com for the marketing site, and then app.mainsite.com for actual production, or if you have multiple it'll have the product name, like coolproduct.mainsite.com We then have app-stg and app-canary subdomains for our test envs which can only be accessed by us (enforced via zero trust). No reason for marketing or SEO teams to care in any case.