Final answer:
Normalization Data Services helps standardize and normalize company names, reducing inconsistencies in an IT environment.
Step-by-step explanation:
The plugin that helps alleviate inconsistencies in company names within an IT environment is Normalization Data Services. This plugin works by standardizing and normalizing the data across the company's Configuration Management Database (CMDB). Normalization ensures that all similar data follow the same format and structure, thus reducing inconsistencies and improving data quality. For instance, it will transform different variations of a company name like 'International Business Machines' and 'IBM Corp.' to a standard format such as 'IBM Corporation'.