How long does the Product Backlog exist?

The Product Backlog exists while the product exists. This means that as long as there is an ongoing need for the product and it is being developed or maintained, the Product Backlog will continue to be relevant and updated. It serves as a dynamic list of features, requirements, enhancements, and fixes that the team can work on.

The nature of the Product Backlog is that it evolves as the product evolves; it is prioritized and refined continuously to reflect the current needs and priorities of stakeholders and to adapt to market changes or user feedback. This continuity ensures that there is always a clear, organized set of items for the Scrum Team to address in future iterations.

In contrast, the other options suggest limited circumstances for the existence of the Product Backlog. The notion that it only exists until the product is launched ignores the ongoing support and updates that products typically require post-launch. Claiming it exists only during the Sprint misunderstands the function of the backlog as a long-term planning tool, while suggesting it lasts only as long as the Scrum Team is together fails to recognize that backlogs are tied to the product rather than the individual team members.