Estimations and Timeboxing
We make blind estimates, at team level, using our planning poker tool, based on the user story and the acceptance criteria.
We use the Fibonacci sequence to address the natural uncertainty of the most time-consuming tasks.
The estimates and real time consumed are analyzed in the "Sprint retrospective" for future estimates and team speed metrics.
We do daily reviews of estimates and time spent. We offer solutions and quickly notify any incident that should arise during development, with the aim of reaching an optimal state without deviations.
We are transparent throughout the process, allowing us some extra space to relax requirements or look for alternatives.