Courtroom testimony refers to the process where witnesses provide their accounts of events in a legal setting, typically during a trial. This testimony is given under oath, meaning the witness promises to tell the truth. The information shared can help the judge and jury understand the facts of the case, influencing the outcome of the trial. Witnesses may be called by either the prosecution or defense, and their statements can include observations, experiences, or expert opinions. The credibility of the testimony is crucial, as it can be challenged through cross-examination by the opposing side's legal team, ensuring a fair legal process.