It does not matter what business environment or niche you are operating in. If you do not have an online presence today, you may just be doomed. That being said, if you do not have a commercial website in place, hardly anyone is going to know you even exist. It used to be so easy in the olden days. Marketing yourself has always had its natural and humanistic challenges, but at least there were practical things you could always do to announce yourself and let the town know of all your wares and services.
You could go door to door, or you could go pamphleteering. If you did not know to at first, you would always find a way to learn. With some experience, you earned the knack of things. But today, it has become quite necessary to broaden your outreach, or broaden your horizons, choose whichever sentiment you feel fits your purpose. You need to market yourself to the entire world, just in case and not necessarily even practically, in order to attract the business that is going to enable you to survive, never mind thrive.
They say that anyone can set up their own website. Do not be too sure about this. And certainly, do not be too cocksure of your own self. Rather than make a profound mockery of your business, make full and extensive use of outsourced IT support to help drive your business forward. As a layman, you are forgiven in thinking that technical issues are their only prevail. But you will be pleasantly surprised, and perhaps even quite relieved, to learn that marketing forms a seriously fundamental part of their service orientations, all geared towards you, of course.