Companies face several challenges during data migration to the cloud, including data quality issues, compliance requirements, and compatibility with existing systems. Ensuring data integrity during the transition is vital, as lost or corrupted data can lead to operational disruptions. Additionally, organizations must address potential downtime during migration and develop comprehensive strategies for staff training to adapt to new systems. Security concerns, such as safeguarding sensitive information and aligning with regulations, also play a crucial role in the successful migration to the cloud.