Amendment Four:  The purpose of Amendment Four is to edit Thunderdome RFI Appendix, Section 4, incorporate Section 6; plus attach questions and answers.

Amendment Three:  The purpose of Amendment Three is to change RFI title from Secure Access Service Edge (SASE) to Thunerdome. 

Amendment Two:  The purpose of Amendment Two is to extend RFI questions due date until 9 June 2021 at 5:00PM EST and response due date until 14 June 2021 at 8:00AM EST.

Amendment One:  The purpose of Amendment One is to correct RFI response date and language in Appendix 1, Section 3.1.

Original:  Defense Information Systems Agency (DISA) is planning the procurement of tools/systems/capabilities, which will assist in deploying a zero trust Secure Access Service Edge (SASE) capability, integrated software defined (SD) Wide Area Network (WAN) technology, Customer Edge Security Stacks, and Application Security Stacks on both the SIPRNet and NIPRNet. DISA seeks industry feedback on the projected acquisition approach.