PubNub 是一家提供数据流网络及相关 API的企业，成立于 2010年，总部位于旧金山。原先 PubNub 的这个网络的主要客户是移动 app，透过后端平台的作用，让 app 内部可以进行通信。不过随着 IT 服务朝着 IP 网络的演进，以及物联网的日渐流行，使得 PubNub 逐步发展为一个安全可靠、遍布全球的的双向数据网络，成为为移动 app、web 以及物联网等依靠定期小型信令传输的服务的承载网。

目前 PubNub 拥有超过 2000 个客户，包括社交应用与消费者应用，以及金融、商业服务等垂直领域，但是物联网现在已成为 PubNub 发展最快和最大的业务。PubNub 的在网设备现已超过 2 亿的设备，每分钟要完成 2000 万个实时事务。我曾使用其它方式如 MQTT 来控制树莓派 GPIO 接口,而以 PubNub 的方式最简单。

以下网址范例在树莓派 3 执行 (树莓派2 也可以) 包含 2 部分, 首先手机透过浏览器接口将控制树莓派 led亮灭信号传至PubNub云端平台, 接着在树莓派执行应用程序(for python) 读取先前已存在 PubNub云端平台的 LED控制信号以控制GPIO 接口使得 LED 持续亮灭。

-PubNub is a provider of network traffic and related API company, founded in 2010 and headquartered in San Francisco. PubNub original main customers of this network is a mobile app, through the effect of the back-end platform, so app can communicate internally. But as the IT service evolution toward IP networks, as well as the growing popularity of things such PubNub progressive development of a safe, reliable, worldwide two-way data network, a mobile app, web and rely on things such as periodic small letter order bearer network transmission services. PubNub currently has more than 2000 customers, including social applications and consumer applications, and vertical areas of finance, business services, but now things have become PubNub fastest growing and largest business. PubNub in network equipment is now more than 200 million of equipment to complete the 20 million real-time transactions per minute. I have used other means such MQTT to control Raspberry Pi GPIO interfaces, and the ea