[legrande]

You have to make sure the business logic can scale (if you want scale). If you want to be a unicorn, you have to be able to make everything 'elastic', which means adding more capacity on servers, for example. You could get cozy with your server provider(s) and make sure they can meet your needs if business really starts to take off. On the other hand, you may be comfortable with a small SaaS business that you don't want to scale up and have it generate a comfortable income for you to live on. Just get your social media and marketing strategy right and you're set.