Spike

A Spike is a type of work item used when a team needs to research, explore, or experiment to better understand a problem---before committing to a solution.

While not part of the official Scrum framework, some teams use Spikes as part of their Product Backlog Refinement activities when more clarity is needed. For example, if the team isn't sure how to implement something, or needs to evaluate a tool or technical approach, a time-boxed Spike can help them learn fast and reduce uncertainty.

Spikes are not about delivering features---they are about gaining knowledge. They can be helpful when regular refinement and team discussion aren't enough. Used deliberately, Spikes support smarter decisions and help reduce risk in product development.