Patching is important, and should be done regularly and as quickly as possible after the patch is released. There are exceptions; the risks associated with this should be carefully considered, and mitigations put in place.
Patching becomes more difficult as the size of the system and the number of components grows. Proper processes and documentation should be put in place to manage it, and dedicated patch management applications considered.
If you are wondering how best to implement patching in your organisation, contact us on 0113 733 6230.