Most business websites are treated as a brochure: something you build once, admire briefly, and ignore for three years. That framing is why so many of them underperform.
A website that works is a commercial system. It qualifies enquiries before they reach your team. It answers the objections your salespeople hear every week. It tells you which services people actually want, and where they lose interest.
The question worth asking is not “does our website look modern?” It is “what does our website do for the business every week?” If you cannot answer that, the design is not the problem.