y, but you can cross promote without having them attached to an umbrella company. Just add info/links to related products on the about page and recommend them

y, but you can cross promote without having them attached to an umbrella company. Just add info/links to related products on the about page and recommend them in your email list, etc. You could even have an umbrella domain name without making it an LLC etc. That lists all your services/products if you want. Forming lots of LLCs can get expensive while you're finding product market fit. Typically you'll only have one or two products that really break out anyway and those are the ones that will need an LLC. y, definitely keep stripe accounts, mailing lists, email services etc you use separate so if you decide to sell one it's easier.