Okay, the user wants me to translate "external communication" into Japanese. Let me think about the correct term here. "External communication" can be translated as 外部コミュニケーション. But wait, sometimes in business contexts, they might use 外部連絡 or 外部対応. However, the most direct translation would be 外部コミュニケーション. Let me check if there's a more standard term. Maybe 外部コミュニケーション is the right one. I should confirm that there's no better equivalent. Since the user specified to translate into Japanese, and the original isn't in Japanese, I'll go with 外部コミュニケーション.