Final answer:
To move videos and automatically transcribe contents in Microsoft 365, use Microsoft Stream, which offers easy management, sharing, and searchable transcriptions.
Step-by-step explanation:
If you need to move videos to a Microsoft 365 tenant and ensure that the contents are automatically transcribed, you should use Microsoft Stream. This service is integrated within the Microsoft 365 suite and offers features such as uploading videos, sharing within your organization, and importantly, automatic transcription of video content. With Microsoft Stream, you can easily manage and access your video content, collaborate with your team, and leverage the power of searchable, automatically generated transcriptions.