SMB --- small or midsize business，原来以为是Small and Middle Business。

WAF --- Web application firewall

IPO  --- Initial Public Offering

ADC --- Application delivery controllers，Application delivery controllers (ADCs) are generally deployed in the data center and provide functions that optimize delivery of enterprise applications across the network. ADCs provide functionality for both

user-to-application and application-to-application traffic. The ADC effectively bridges the gap between

the application and underlying protocols and the traditional packet-based networks.

WOC --- WAN Optimization Controller

TCO --- Total Cost of Ownership

SDN --- Software-Defined Network