Everforth’s $148M SUNet Deal Isn’t the CDAO SUNet 2.0 Modernization Contract

Everforth’s $148M SUNet Deal Sustains the Old Network. It Doesn’t Fund SUNet 2.0.

Everforth ECS announced a three-year extension to sustain the Secure Unclassified Network (SUNet), at a reported $148 million ceiling. That deal isn’t the CDAO SUNet 2.0 modernization contract. No single contract covers SUNet 2.0’s replacement work. If your firm has no seat on SUNet 2.0 today, Everforth and Sigma Defense are the two clearest entry points. Two companies and two contract types split the replacement network, so no one vendor has it locked.

SUNet is the Chief Digital and AI Office’s (CDAO’s) unclassified network for Department of War teams and mission partners. SUNet 2.0 is CDAO’s zero-trust, hybrid-cloud replacement. It’s built as an AI/ML sandbox so those teams can build and test tools faster. A separate Commercial Solutions Opening (CSO) selection sent Everforth to prototype that replacement. A second company, Sigma Defense, holds its own deal for the same network. It’s an Other Transaction Agreement (OTA) for a SUNet 2.0 minimum viable product (MVP).

The basics, before the mechanics:

• The legacy SUNet IDIQ extension runs three years, through September 29, 2029, at a reported $148 million ceiling, $147.8 million in a more precise figure.
• It’s reported as sole-source and cost-plus-fixed-fee, with one bid solicited and one received.
• A separate CSO selected Everforth to prototype SUNet 2.0, announced in the same news cycle as the IDIQ extension.
• Sigma Defense separately holds an OTA for a SUNet 2.0 MVP, reportedly awarded in July 2026. Its awarding office isn’t public.

The $148M Figure Is a Ceiling, Not Obligated Spending

Every dollar figure tied to Everforth’s SUNet work is a ceiling or a reported potential value. None is a confirmed obligated amount. The 2026 extension’s $148 million is a three-year ceiling under a cost-plus-fixed-fee IDIQ. Funds obligate incrementally through task orders against that cap. Everforth’s original 2019 award carried a reported $112.4 million potential value if every option year is used. A 2021 modification added a reported $87 million.

A BD lead who sizes this opportunity off the $148 million headline is pricing against a maximum the government may never spend. That’s the familiar contract ceiling vs. obligated funding gap on IDIQ vehicles. Here, the action is sole-source and already closed to new entrants. No figure is public for the CSO selection either, plausibly because a selection can come before an award. Sigma’s OTA has its own possible reasons. It could be a reporting lag, or a consortium setup where Sigma isn’t the awardee of record. I’d watch the contract one step over instead, the one that replaces this network.

A Commercial Solutions Opening Sends Everforth to Prototype the Network It’s Also Sustaining

This award is two separate contract actions, not one company winning one deal. The sole-source IDIQ extension pays Everforth to sustain, and eventually retire, the legacy network it has run since 2019. A separate CSO selection tasks the same company with prototyping its replacement. The incumbent is retiring what it profits from maintaining, while building what comes next. Neither award guarantees the other. Sigma Defense’s OTA also means Everforth isn’t the only company building toward SUNet 2.0.

The CSO selection sits inside this reported modernization timeline:

1. August 27, 2026: a draft SUNet Modernization Call for Solutions reportedly posts.
2. September 10, 2026: the final version of that Call for Solutions reportedly posts.
3. September 15 to 17, 2026: an Industry Day reportedly held in Orlando for prospective respondents.
4. September 21, 2026: solutions reportedly due under that Call for Solutions.
5. September 24, 2026: Everforth’s CSO selection and its legacy IDIQ extension are both announced.

Everforth announced the CSO selection three days after that Call for Solutions closed. That timing makes a direct link plausible. But three days is short for a full evaluation, so a separate, earlier CSO action is just as plausible. Either way, I’d track the Call for Solutions. It’s a competitive mechanism, not a sole-source one, and its full respondent roster is still not public.

Sigma Defense’s OTA for a SUNet 2.0 MVP Is a Second, Unreconciled Track

Sigma Defense holds a separate OTA for a SUNet 2.0 minimum viable product, reportedly awarded in July 2026. Its awarding office and competition basis are undisclosed. That’s a different mechanism from Everforth’s CSO selection, and nobody has said where the scope boundary between the two awards sits. They may cover the same scope, sequential phases, or distinct deliverables. For a firm deciding whether SUNet 2.0 is still open, that gap matters more than the headline dollar figure. Two companies are building the same network on two mechanisms. That is evidence against a single-vendor lock, not proof the field has closed.

Three questions remain open as of this writing:

• Where the scope boundary sits between Everforth’s CSO prototype work and Sigma Defense’s OTA MVP.
• Whether the SUNet Modernization Call for Solutions’ full respondent and selectee roster includes any company beyond these two.
• Whether the Call for Solutions that closed September 21, 2026, produces a follow-on production award, or whether CDAO down-selects straight from the current prototype phase.

A firm sizing this up doesn’t need to wait for these answers. Match your capability against whichever company’s reported scope fits closer. That narrows the guesswork faster than waiting for the answers to go public.

How a Systems Integrator Gets Into CDAO SUNet 2.0 Modernization Contract Work Without a CSO or OTA Seat

The legacy IDIQ extension is closed: sole-source, already awarded, running through 2029. The near-term work is in SUNet 2.0’s two tracks, and the right route depends on where a firm stands today. For a firm without a CSO or OTA seat, the clearest route to test is a subcontract role with Everforth or Sigma Defense. A prime solicitation hasn’t opened, so waiting on one costs time. CDAO is the requiring office behind all three awards. The contracting activities running the CSO and OTA aren’t named. If the two tracks turn out to be deliberately coordinated, watch for the same pattern on CDAO’s other programs.

Different firms face different next moves:

• Firms with no SUNet 2.0 seat: approach Everforth or Sigma Defense to work as a subcontractor on their prototype or MVP scope.
• Firms tracking CDAO’s broader AI and cloud agenda: watch whether this CSO-plus-OTA pattern is deliberate, since that would signal CDAO’s next competition.
• Firms with a past submission or Industry Day attendance here: watch for a follow-on round rather than treating September 21 as a closed door.

• Pull your past performance in zero trust and hybrid-cloud prototyping. SUNet 2.0’s public description centers on these two areas. Neither instrument’s evaluation criteria are public.
• Compare your capability to Everforth’s and Sigma Defense’s prototype scope. Then decide which company to approach first.
• Ask CDAO or the SUNet 2.0 program office if a follow-on Call for Solutions round is planned. Do not assume September 21 closed the door.

What Would Turn SUNet 2.0 Into an Open Competition Again

Everforth’s legacy position was extended, not displaced. This isn’t a retention-risk story. The finding I’d flag is on the modernization side. Two companies hold two mechanisms for one replacement network, and a Call for Solutions closed September 21, 2026, with its outcome not yet public. Team now. A competitively awarded, completed prototype OTA (or a CSO that produces a prototype OT) can move to follow-on production without new competition. Neither award’s basis is public, so treat this as possible, not certain. A new, open SUNet 2.0 solicitation would turn this from a teaming play into a direct pursuit. That could be another CSO round, another OTA, or a traditional competitive award. A confirmed down-select to only Everforth and Sigma Defense, with no further on-ramp named, would signal that this window has closed. Then the next opportunity is whatever program CDAO stands up once SUNet 2.0 matures.

FAQ

What is SUNet 2.0, and which companies are building it?

SUNet 2.0 is CDAO’s planned replacement for the Secure Unclassified Network. It uses zero-trust security controls and hybrid cloud to speed up AI/ML development. Everforth ECS holds a Commercial Solutions Opening selection to prototype it. Sigma Defense separately holds an Other Transaction Agreement for a minimum viable product version.

Is Everforth’s $148 million SUNet contract funding the legacy network or its replacement?

It funds the legacy network. The $148 million reported ceiling extends Everforth’s contract to sustain, and eventually retire, the current SUNet. It doesn’t build SUNet 2.0. That work runs through a separate Commercial Solutions Opening with no public dollar figure attached.

What is the difference between Everforth’s CSO prototype work and Sigma Defense’s OTA for SUNet 2.0?

Both target the same replacement network, but they use different contract mechanisms. Everforth has a Commercial Solutions Opening, and Sigma Defense has an Other Transaction Agreement. The exact scope boundary between their work isn’t public. Whether they’re building competing approaches, sequential phases, or distinct deliverables remains an open question.

How can a systems integrator get into SUNet 2.0 modernization work?

The most direct path into a CDAO SUNet 2.0 modernization contract is a subcontract or teaming role with Everforth or Sigma Defense on their existing scope. A prime seat would need a new SUNet 2.0 solicitation round, and none is confirmed open.

Is the $148 million SUNet figure an obligated amount or a contract ceiling?

It’s a ceiling. That’s the maximum value of a three-year, cost-plus-fixed-fee IDIQ extension. It pays out in increments against that cap. No obligated amount is public for the extension, the CSO selection, or the OTA.

Did the SUNet Modernization Call for Solutions produce Everforth’s CSO selection?

That link is plausible but unconfirmed. The Call for Solutions closed for responses on September 21, 2026, three days before Everforth announced its CSO selection. Whether the CSO selection is that Call for Solutions’ direct outcome or a separate, earlier action isn’t public.

Does Sigma Defense’s OTA put Everforth’s SUNet 2.0 position at risk?

No evidence points that way. The two hold separate mechanisms: a CSO for Everforth, an OTA for Sigma Defense. Nothing shows them competing rather than building distinct or sequential pieces.