ITV.com's dedicated World Cup website, ITV Live, left football fans unable to watch the opening game of the tournament online following a technical error.
ITV Live was launched on Friday as a social TV platform, allowing fans to "watch and chat" about the game. But following an 18% peak in web traffic, some viewers could not access ITV Live in the second half of the South Africa vs Mexico match due to technical difficulties.
An ITV spokesman said, "We are aware there has been an issue with the content delivery network within ITV Live, which may have affected the experience of a small percentage of users joining in the latter half of the match. We are working to resolve this problem."
According to the broadcaster, ITV.com's main site was not affected and 70,000 viewers were able to continue watching the match via ITV1's live stream on the homepage.
Nick Barron, head of sales at cloud computing specialist Carrenza, said, "Although this is extremely unfortunate for football fans, ITV has joined a long list of distinguished names that have experienced technical glitches when their websites have proved successful and resulted in huge surges in traffic."
Barron said companies must ensure their websites are designed, from the beginning, with the architecture capable of meeting high demand, and able to flex resources to meet spikes in use.
"In today's climate, it's important to work smartly and deploy the resources you're going to need. You need to make sure you have any additional resources on standby," he said.
ITV is sharing the live broadcast and streaming rights with the BBC and is scheduled to show 32 matches.