Website speed optimization takes away one barrier between you and your audience.
To lure and retain visitors, and later customers, you can only functional, fast-working product.
The faster your site will be loaded, the more visitors you can get from search engines, and, accordingly, more money to earn on it.
To keep running smooth or to minimize failures, you need to do work in at least two ways: support for the health of the hardware and the unmistakable operation of the software.
Server maintenance includes one-off work to set up or fix failures, and regular professional work to maintain the reliability of the system at the proper level.