Patch
A patch is a set of changes to a computer program or it's supporting data designed to update , fix or improve it.This includes fixing security vulnerabilities and other bugs,with such patches usually being called bug fixes or bug fixes and improving the functionality,usability or performance.
Microsoft releases patches in a monthly cycle,commonly referred to as "Patch Tuesday" ,the second Tuesday of every month.
Four types of Updates:
- Security Updates: Security updates or windows work to protect against new and ongoing threats.They are classified as critical,Important,Moderate,Low or non-rated.
- Critical Updates: These are high priority updates. when these are released ,they need to be updated as soon as possible
- Software Updates: Software updates are not critical.They often expand features.
- Service packs: These are roll-ups or a compilation,of all previous updates to ensure that you are up to date on all of the patches since the release of the product up to a particular date.If your system is behind on updates,then service packs bring your system up to date.
Typical monthly process by most organization:
- Patch release: 1.OS 2.Application
- Testing: 1.Compatibility with custom application 2.Small Test group
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