This is the best invention since sliced bread. IT projects are no longer planned across the entire project upfront; instead, upcoming tasks are tackled in short sprints. Then, it's assessed whether progress has been made with the solution and the most sensible next step. This drastically reduces the risk of developing things that the team or client had envisioned differently.
One positive aspect is that requirements and wishes are always clearly and understandably defined in so-called User Stories. The advantage is that all project members – including non-developers – have the chance to understand and discuss the approach to solving a problem. Only once there is agreement here is it translated into IT syntax.
User Stories are continuously captured and collected in a so-called backlog. From this inbox, the topic with the highest relevance is then selected for the next development sprint.
To manage these processes, there are countless tools of varying complexity. A sure bet is a real board where User Stories are affixed with Post-Its and then manually moved from the backlog into "development." This provides excellent visualization of ongoing development. However, with distributed teams, this quickly reaches its limits. We then like to work with Trello, which is essentially the digital translation of the wall board. If it gets more complex, you can switch to Asana, which offers even more subtleties for planning and managing individual sub-tasks. Our recommendation is always to use the simplest possible tool for as long as possible.
Again and again, we see projects where incredibly powerful tools are used, but due to a lack of broad understanding, project management runs in parallel via email, Excel sheets, or other channels.