This Defense Research and Engineering Network (DREN) 4 Performance Work Statement (PWS) was originally issued in Dec 2019, in order to continue providing state-of-the-art Wide Area Networking (WAN) services as a follow-on to the services provided under the DREN III PWS. The contract was awarded in May 2021 and will enable further expansion of the DREN WAN capability.
This DREN 4 PWS [PDF version] (Dod PKI required) provides details about the services and capabilities available under the contract.