A senior executive at Alibaba Group Holding Ltd's cloud computing unit rejected Google Inc's harsh criticism of the company's Aliyun operating system, which caused handset maker Acer Inc to put the launch of its new smartphone on hold last Thursday.

Google has intentionally "blurred the boundaries" between its own operating system and the Open Handset Alliance, said Wang Jian, president of Aliyun Computing Co.

The Open Handset Alliance is a consortium of companies, led by Google, that develops open standards for mobile devices. The Android OS, which has a dominant market share in China, is the flagship software of the alliance.

Last week, Acer had to cancel the launch of its new cell phone due to pressure from Google, as the device runs on an operating system provided by the search giant's competitor Alibaba. Acer is bound by the rules of the Open Handset Alliance.

"Aliyun is in no position to protect the current and future interests of the Google OS. The two parties will face competition and even confrontation in the future," Wang said in a written statement.

Aliyun is built on open-source Linux software and runs homegrown applications. It is not fully compatible with Android.

"Aliyun is designed to run cloud apps made for our own ecosystem. It can run some but not all Android apps," Wang said.

Wang added that the industry should be aware that Google is trying to monopolize the market by repressing innovative rivals.