When you own a car it is essential that you monitor its performance and health through annual services and MOTs. Without these you cannot be sure that a) your car is safe or b) that it will assist you in achieving your objective of getting from A to B.
What many businesses fail to realise is that they should treat their IT systems and infrastructure in the same way. Without completing health checks on your IT there is no way to be sure that it will help you in achieving your business objectives, which for many is to ensure you can continue to grow your client base and scale your business. A healthy business needs healthy IT!