Whether it is professional to say "Roger that" depends entirely on your industry and the specific "culture" of your workplace. In high-stakes, high-stress environments like aviation, emergency services, military operations, or logistics, the phrase is considered highly professional and even necessary. In these fields, "Roger" (the phonetic for the letter 'R') specifically means "Message Received and Understood," providing a concise, standardized way to close a communication loop without wasting time. However, in a traditional corporate office or a formal business meeting, using "Roger that" can come across as overly casual, "playful," or even slightly patronizing, as if the speaker is trying to sound like a pilot or a soldier. In a modern white-collar setting, it is generally more professional to use clearer, more standard business language such as "Understood," "Confirmed," "I've noted that," or "Will do." Using "Roger" in a Zoom call with clients might be seen as a bit "cliché" unless the team has an established, informal rapport. Ultimately, the goal of professional communication is clarity, so if "Roger" is the clearest way for your specific team to acknowledge a task, it is acceptable, but it should be used with caution in formal external communications.