The Cloud Native Computing Foundation (CNCF) added four new members to its efforts to develop an open source-based container orchestration platform.

The new members include Tencent Cloud, which joined as a “Gold” member; Mashape, which signed on as a “Silver” member; and Vevo and Zalando Technology, which both joined the organization as “End-User Supporters.”

CNCF was formed in mid-2015, coming out of the gates with 22 members, including AT&T, Google, IBM and Twitter. The organization, which is housed in the Linux Foundation, touted a focus on orchestration interoperability, using APIs to link disparate container services and applications.

“The incredible rate at which companies are turning to container technologies to achieve cloud portability is a testament to the excitement and trust building around open source technologies,” said Dan Kohn, CNCF executive director, in a statement on the new members.

Much of CNCF’s orchestration focus has been around Kubernetes, which was donated to the open source group by Google in 2015. The platform has since become a significant component for the orchestration and management of container models, having been backed by a number of high-profile companies like Canonical, Cisco, and Huawei.

A recent report conducted by container storage company Portworx found no clear leader in terms of container orchestration platforms, with most of the 491 IT professionals surveyed stating their use of multiple orchestration solutions.

Kubernetes was cited as the most used orchestration tool, with 43 percent of those surveyed stating they used the platform and 32 percent saying it was their primary orchestration tool. The survey also noted that 32 percent of Kubernetes users also used Docker Swarm.

“While Kubernetes is the most popular scheduler, it may be another year or more before we can draw concrete conclusions about winners, with a likely outcome being that customers use multiple tools for different jobs,” the report stated.

The overall market for application containers is expected to grow at a compounded annual growth rate (CAGR) of 40 percent, growing from a $762 million business in 2016, to a nearly $2.7 billion business by 2020, according to a report earlier this year from 451 Research.