Which method allows a flow to be available on every page within an app?

Embedding the flow in the utility bar is the method that allows a flow to be accessible from every page within an app. The utility bar is designed specifically for this purpose, as it provides a consistent set of tools and features across different pages and applications within the Salesforce environment. By placing a flow in the utility bar, users can easily access it regardless of which page they are currently on in the app, enhancing usability and visibility.

In contrast, publishing a flow on the homepage limits its availability to just that initial page, requiring users to navigate away from other sections to access the flow. Adding a flow to the sidebar may also restrict its usability to specific pages where the sidebar is present, rather than providing universal access across the app. Similarly, linking a flow in the footer does not offer the same level of consistent availability, as footers may vary or not be visible at all times depending on the page layout or specific user permissions. Therefore, embedding a flow in the utility bar is the optimal choice for making it universally accessible across all app pages.