How do JIRA REST API and JIRA Align API differ from each other?

I’m working on a project and need to understand the key differences between these two APIs. Can someone explain what JIRA Align API is used for and in what scenarios I should choose it over the regular JIRA API? I’m also looking for information about the available REST endpoints for JIRA Align and wondering if there’s any official documentation I can reference. I’ve been searching around but haven’t found clear guidance on when each API is most appropriate. Any help would be appreciated!

The main difference lies in their scope and purpose. The JIRA REST API operates at the project level, managing issues, workflows, users, and project configurations. In contrast, the JIRA Align API is designed for strategic planning and enterprise portfolio management, catering to multiple projects and teams. Based on my experience, you would opt for the JIRA Align API when focusing on strategic initiatives, roadmap planning, or requiring visibility into cross-team dependencies and resource allocation. Conversely, the regular JIRA API is sufficient for standard development workflows like ticket creation, status updates, or sprint management. For documentation, Atlassian provides distinct API references for each, with the JIRA Align API documentation being less comprehensive than that of the JIRA REST API, which can complicate integration. Additionally, the authentication methods differ slightly between the two.

I’ve worked with both APIs before - they’re completely different beasts. JIRA REST API connects straight to your JIRA instance and handles the day-to-day stuff like issues, comments, and workflows through standard REST endpoints. JIRA Align API runs on its own platform that pulls data from multiple JIRA instances and other sources for strategic oversight. The response structures are totally different too. JIRA REST gives you detailed issue objects, while Align focuses on high-level metrics and portfolio views. You’ll also need separate credentials and API tokens for Align. For day-to-day dev work, stick with JIRA REST API. But if you need strategic planning data or executive dashboards showing progress across multiple teams, you’ll want JIRA Align API despite the steeper learning curve.

jira Align API is for enterprise stuff like portfolio management, while the reg. Jira API is more about simple proj tasks. If ur dealing with big scale epics, Align is the way to go!