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Glossary term
gloTermHTTP

HyperText Transfer Protocol (HTTP) is the protocol for moving information across the Internet. All webpage addresses begin with "http://" or "https://" (for a secure connection) but most new browsers hide this from you. We say Ignition uses HTTP to communicate between the Clients and the Gateway. This just means that Ignition is using an existing, proven technology to transfer its information throughout the network.

Glossary term
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gloTermHDA
termSynsOPC-HDA

Historical Data Access is a specification for exchanging archived, or historical, process data. A contrast to OPC DA, which only deals with real-time data. OPC Foundation's HDA specifications