Content delivery systems improve load times for websites and provides other services to internet sites, apps and platforms. The services accomplish that by storing content and aspects of websites and apps on servers that are physically closer to users.

The company also said the “issue was not caused by a system update or a cyberattack.”

In a statement to CNN Business, Southwest Airlines said it worked quickly to restore the systems following the outage. The pause in connectivity did not impact the airline’s flight operations, it said in a statement.

A spokesperson for Los Angeles International Airport told CNN Business that they experienced momentary disruptions, but there were no significant delays or cancellations. The airport did not immediately respond to a request for comment about which websites or systems were disrupted.

Australia’s Westpac bank apologized to customers. “Affected Westpac systems are now back up and running following an issue today with a third party provider which impacted some of our services including internet banking,” it said in a statement.

A spokesperson for Commonwealth Bank of Australia said “we are seeing services return following a tech outage which had widespread impacts across businesses.” ANZ said the outage affected its app and internet banking platform, but services had been restored.

Major website and app outages happen from time to time and typically don’t last long — internet service providers, content delivery networks and other hosting services are built with multiple redundancies and a global network of backup servers designed to reduce disruptions when things go haywire.

— Angus Watson and Michelle Toh contributed reporting.