This month, SDxCentral found parking at NFV World Congress and flew to Vancouver for the OpenStack Summit. If you haven't already, check out the slideshow of our time at the Summit and book your vacation to Vancouver now.

We weren't at events all month, so naturally, news happened. Here's our list of the top SDN and NFV articles of May 2015, based on unique visitors aggregated during the last four weeks. Enjoy.

10. VMware Says Customers Are Betting Big on NSX

More than 50 customers have invested more than $1 million apiece in VMware's platform. Read more.

9. Alcatel-Lucent Launches the Network Services Platform for Carrier SDN

Alcatel-Lucent extends its carrier SDN portfolio. Read more.

8. Cisco CEO John Chambers Gets Cocky on His Final Earnings Call

John Chambers laughs at white boxes and predicts Cisco greatness in the Internet of Things (IoT) era. Read more.

7.  Why Cisco Picked Chuck Robbins as Its Next CEO

Were you surprised? Here's why he fits. Read more.

6. AT&T Domain 2.0 Exec: Out With Cats, In With Midget Cows

Toby Ford describes AT&T's Domain 2.0 strategy. Read more.

5. Cumulus: Watch Out, Cisco, White Box Is Coming

White box isn't just taking names, it's taking the market, Cumulus claims. Read more.

4. Google's Urs Hölzle: Containers Will Rule the Cloud

Open source and container technology will drive the future of the cloud. Read more.

3. Arista Networks Casts Doubt on Cisco's APIC Claims

Arista CEO Jayshree Ullal takes a moment to needle Cisco. Read more.

2. How AT&T Honed Its SDN & NFV Plan: Code First, Tweak Later

AT&T extends its controller's reach to Layers 4-7, going beyond Layers 0-3. Read more.

1. How Facebook Transformed Its Networking Team

Facebook engineers didn't want to work on networking. But that was before FBAR. Read more.