If your cabling complies with the certification, this implies that, in the future, and despite possible changes in technology (for example in servers) or the need to expand your business networks, the structure will remain in force and will be able to be adjusted to new demands.
A good structure avoids problems of data loss on the network or communication failures, which can dramatically alter your business.
If you are a specialist in delivering application solutions or information systems, the certification process will be a guarantee that you can meet the demands of your customers, you will also be able to know the real speed of the networks and thus guarantee their performance.
Users are increasingly aware of quality issues and having certifications is proof that your business is evolving. Remember that these documents are essential when audits or in the case of requiring maintenance or periodic reviews.