What is the difference between bug priority and severity?

Priority indicates how quickly a bug needs to be fixed based on business needs. Severity describes the degree of impact a bug has on the system's functionality.

Severity (Severity) defines:

• Critical (Blocking): The system is completely non-functional or its key feature is unavailable.
• Major (Critical): Main functionality is disrupted, but the system is partially operational.
• Minor (Significant): Minor defects that do not affect a key feature.
• Trivial (Insignificant): Cosmetic errors or typos.

Priority (Priority) defines:

• Immediate (Highest): Fix immediately, blocks further work.
• High (High): Fix soon, affects important functionality or user experience.
• Medium (Medium): Fix within the current sprint or the next.
• Low (Low): Fix when there is free time or in future releases.

Example combinations:

Severity	Priority	Description
Critical	Immediate	Application "crashes" on startup.
Major	High	Cannot place an order on the website.
Minor	Medium	Incorrect text alignment in a form field.
Trivial	Low	Typo in an error message.
Minor	High	Logo error on the homepage, although functionality is not disrupted, but it is business-critical for the brand.