Amazon and Google have joined Microsoft in rejecting the proposed Open Cloud Manifesto.
Amazon Web Services claimed in a statement that although it believes standards will continue to evolve, ‘the best way to illustrate openness and customer flexibility is by what you actually provide and deliver for them'.
It said: “Over the past three years, we've made AWS available via multiple platforms, multiple programming languages and multiple operating systems – because that's what customers have told us matters the most to them. We'll continue to pursue an approach of providing customers with maximum flexibility as the standards discussion unfolds.”
In a statement to the BBC, Google said: “We value industry dialogue that results in more and better delivery of software and services via the internet and appreciate IBM's leadership and commitment in this area.”
Meanwhile the Cloud Computing Interoperability Forum (CCIF), which had added its name to the list of more than 30 companies in the plan, withdrew its support over the weekend. IBM, Cisco, Sun Microsystems, AT&T, Red Hat, SAP and AMD are still backing the plan.
The CCIF explained its decision to back out in an online post and stated it ‘comes with great pain as we fully endorse the document's contents and its principles of a truly open cloud'. It said: “However, this community has issued a mandate of openness and fair process, loudly and clearly, so the CCIF cannot in good faith endorse this document.”
Karla Norsworthy, vice president of software standards at IBM, told BBC News: “The aim was for this (Manifesto) to serve as a rallying cry to the industry to get focused around the importance of the cloud environment being open. We are pleased about the number of vendors who have signed up.
“As regards Microsoft, we are still hopeful about working together on giving customers the flexibility they have come to expect from technology that is open.”
Steven Martin, senior director of developer platform management at Microsoft, who criticised the manifesto for not being written in an open process, claimed that Microsoft will attend the Cloud Computing Expo in New York this week, and meet with other vendors and members of standards bodies.