A DOI (Digital Object Identifier) is a permanent, unique identifier assigned to a research article or other scholarly work. It helps readers, researchers, and indexing services reliably identify and locate a publication.                                                                                                                                                                                                                                                                        Key benefits of a DOI- Permanent identification A DOI provides a unique identifier for an article, even if the journal's website or article URL changes:

• Easy access to research- Readers can use the DOI to locate the published article online.
• Improves discoverability- DOI metadata can help scholarly databases and search systems identify and organize research publications.
• Accurate citation- Including a DOI in a reference helps readers locate the exact article being cited.
• Helps prevent ambiguity- Different articles can have similar titles or authors, but each DOI is unique.
• Supports scholarly linking- DOI links allow researchers to move directly from a citation to the associated publication.
• Useful for indexing and metadata- DOI registration creates structured publication metadata that can be used by scholarly communication systems.
• Long-term accessibility- DOI infrastructure is designed to provide persistent identification and linking over time.

In simple terms:  Article →  DOI →  Persistent identification →  Easier citation