Amazon said restoring its cloud computing operations in Bahrain and the United Arab Emirates will take several months after data centers were damaged by Iranian drone strikes in early March.

The company advised customers to move accessible resources to other regions and recover inaccessible data from remote backups as soon as possible. Dozens of services in the affected countries remain disrupted, with some outages ongoing since the attacks.

The damage has also led Amazon to suspend billing operations in the region. Cloud computing is Amazon’s most profitable business segment, serving major corporations, financial institutions, media organizations and public sector clients worldwide.