Customer relationship management platform Salesforce has been hit by a global outage.

The issue appears to impact a large number, but not all, customers around the world.

The company, the world's largest enterprise software firm, has yet to disclose the cause of the outage.

Salesforce said that it was rolling out a fix that should help some users continue service. "The emergency release continues rollout in a staggered fashion across all impacted instances," it said in a status update.

"Customers may experience a brief window of service disruption when the release is rolled out to their instance."

Since 2016, Salesforce has used Amazon Web Services for cloud compute, alongside 10 self-managed data centers across the US, Europe, and Japan.