Who planned the tasks for sprints?

Sprint tasks are usually formed by several roles depending on the organization and development process:

• Product Owner (PO) — responsible for prioritizing tasks and formulating requirements from a business perspective.
• Scrum Master — helps the team organize the process but usually does not engage in task formation.
• Technical lead or architect — may participate in breaking down large tasks into smaller technical subtasks.
• Developers — often participate in estimating and detailing tasks, especially during sprint planning.

Ultimately, tasks are usually tackled collaboratively: the PO sets priorities and business context, while the development team clarifies technical details and breaks tasks into sprints. Some teams have a dedicated planning engineer, but more often it is a collective process.