What is Out-of-band Remote Access?

Question

System administration

DMIDECODE:

Handle 0x001E, DMI type 30, 6 bytes
Out-of-band Remote Access
  Manufacturer Name: Intel
  Inbound Connection: Disabled
  Outbound Connection: Enabled

LSHW:

*-remoteaccess UNCLAIMED
       vendor: Intel
       physical id: 2
       capabilities: outbound

LSHW GUI:

Answer 1

It looks like an analog of IPMI from INTEL.
Out-of-band Remote Access generally means independent (from the main machine) remote access.

Answer 2

Out-of-band - transmission of a control connection on the same channel as the data. In this case, the transmission of remote access commands to the device (Intel IME, apparently) and responses to them over the same channel through which the OS exchanges data.