The cloud wars rage on, and this time, the battle is over billing increments.
The new billing model will be available immediately, which means Google actually beat AWS to the punch. AWS's new pricing plan will start October 2.
The tech giant will apply its new per-second pricing to many of Google Cloud's core products, including its Compute Engine and App Engine, which allow companies to build software and store data within Google's servers. Customers will get per-second billing regardless of whether the servers they're using run Microsoft Windows or Linux.
With a handful of other products, including its network storage offering, Persistent Disks, Google already charged customers on a per-second basis. However, until Tuesday, Google Cloud primarily billed by the minute — a billing model it first introduced in 2013.
At Amazon, things are a little different. The new per-second billing applies to EC2, the prime computing engine at the core of AWS, which historically charged customers by the hour. It also applies to EBS, an EC2 block storage product.
However, this new billing model only applies to virtual servers running the Linux operating system, which means it will continue to bill use of its Microsoft Windows servers on an hourly basis.
(The serverless compute product, AWS Lambda, is also priced per millisecond.)
Per-second billing may help keep Google competitive with AWS, but it's not likely to dramatically affect many customers' wallets, the company said. The average user may only save 99 cents a day under the new payment system, said Paul Nash, group product manager of Google's Compute Engine, in a blog post.
"In most cases, the difference between per-minute and per-second billing is very small — we estimate it as a fraction of a percent," Nash said.
Nash compared the move to per-second pricing to past adjustments — such as the industry-wide shift from per-hour billing to per-minute billing — which had a big impact on websites and apps. Content-oriented customers often experience short spikes in traffic, and need to increase the amount of server space that they're using quickly, he said.
"We don't want to make you choose between your morning coffee and your core hours, so we're pleased to bring per-second billing to your [virtual machines], with a one-minute minimum," he said.
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