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Hi,
Hotfixes
A hotfix is created to address a specific issue, problem, or customer scenario. A hotfix can address either a single issue or a cumulative set of issues. Hotfixes are distributed only to those customers, partners, and organizations that Microsoft technical support personnel determine can benefit from the changes that are made to the code. Each hotfix includes documentation that indicates what files, tables, code, or functions are changed by the hotfix.
Microsoft publishes a corresponding Knowledge Base (KB) article for every hotfix that is released for every Microsoft product. These products include Microsoft Dynamics AX. These KB articles describe the changes that the hotfix makes to objects, database tables, or files, or other code. Each hotfix is released to address a specific issue or scenario to restore the regular operation of the software. You must review the corresponding KB article to evaluate whether you have to apply the hotfix in your Microsoft Dynamics AX implementation.
Cumulative updates
A cumulative update (CU) is an update that contains all previous hotfixes to date. Additionally, a CU contains fixes for issues that meet the criteria for hotfix acceptance. These criteria may include the availability of a workaround, the effect on the customer, the reproducibility of the problem, and the complexity of the code that must be changed. When you plan a deployment that will use any of the industry solutions, we recommend that you install the industry solution before you install cumulative updates.
Important: Any hotfixes that you previously applied are not included in a cumulative update are lost after you install the cumulative update. You must reapply those hotfixes after your installation.
Service packs
A service pack is a tested, cumulative set of all hotfixes and updates. Service packs may also contain additional fixes for problems that have been found internally since the release of the product, and a limited number of design changes or features that were requested by customers.
Feature packs
A feature pack is a group of updates that relate to a feature area or group of functionality. Feature packs contain design changes or features that were requested by customers, and may also contain additional fixes for problems that have been found internally since the release of the product.
Also refer below links
http://technet.microsoft.com/en-us/library/hh335183.aspx
http://www.microsoft.com/en-us/download/details.aspx?id=39096
one way to differentiate is the size
Hotfixes < Cumulative Update < Service Packs < Features packs
Hotfixes does not requires complete upgrade process, Compile and Synchronize is enough
where as Cumulative Update, Service Packs and Features Packs do requires In-place Upgrade process
normally Hotfixes, Cumulative Updates contains bug fixes
Service Packs and Features packs contains new features too
When imported in AX
Hotfixes can get installed in USR/CUS/VAR layer if it is supplied in XPO
Cumulative Update/ Service Packs are provided along with installer and normally gets installed in SYP layer
Feature Packs gets installed in FPK layer
Please verify and lets us know if this information helps you.
Hello Nitesh,
Your explanation was good. But what the abbreviation of layer stands for? Can u mention it.
Best Regards,
Ponraj Paul
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