This page describes the standard terminology that Microsoft Dynamics NAV is using to describe software updates.

Microsoft is using the following standard terminology to describe Microsoft Dynamics NAV software updates: 

 Critical Update
Definition: A critical update is a broadly released fix for a specific problem that addresses a critical, non-security-related bug. 

 Feature Pack
Definition: A feature pack is new product functionality that is first distributed outside the context of a product release and that is typically included in the next full product release. 

Definition: A hotfix is a single, cumulative package that includes one or more files that are used to address a problem in a product and are cumulative at the binary and file level. A hotfix addresses a specific customer situation and may not be distributed outside the customer's organization.
Additional Information: Hotfixes are distributed by Microsoft Product Support Services. Customers may not redistribute hotfixes without written, legal consent from Microsoft. 

 Security Update
Definition: A security update is a broadly released fix for a product-specific, security-related vulnerability. Security vulnerabilities are rated based on their severity. The severity rating is indicated in the Microsoft security bulletin as critical, important, moderate, or low. 

 Service Pack
Definition: A service pack is a tested, cumulative set of all hotfixes, security updates, critical updates, and updates. Service packs may also contain additional fixes for problems that are found internally since the release of the product and a limited number of customer-requested design changes or features. 

 Software Update
Definition: A software update is any update, update rollup, service pack, feature pack, critical update, security update, or hotfix that is used to improve or to fix a software product that is released by Microsoft Corporation. 

Definition: An update is a broadly released fix for a specific problem. An update addresses a non-critical, non-security-related bug. 

 Update Rollup
Definition: An update rollup is a tested, cumulative set of hotfixes, security updates, critical updates, and updates that are packaged together for easy deployment. A rollup generally targets a specific area, such as security, or a component of a product, such as Internet Information Services (IIS).