Key Highlights

  • A five-year, $335 million storage agreement with AI cloud CoreWeave has vaulted Backblaze from backup also-ran toward would-be AI-infrastructure play, validating a costly pivot to exabyte-scale, high-throughput storage while raising fresh questions about concentration and cash.
  • First-quarter 2026 revenue rose 12% year over year to $38.7 million, led by B2's 24% growth to $22.4 million; Computer Backup was flat at $16.2 million.
  • Bulls argue the CoreWeave deal is a proof point, not a one-off.

The Immediate Catalyst

Backblaze (NASDAQ:BLZE)'s re-rating hinges on a single contract. On June 23, 2026, the cloud-storage vendor announced a five-year, multi-exabyte data-storage agreement with CoreWeave (Nasdaq: CRWV), one of the marquee AI-infrastructure providers and a supplier to nine of the top 10 AI model developers, carrying a total contract value of roughly $335 million. That figure is more than double Backblaze's entire 2026 revenue guidance, making it comfortably the largest deal in the company's history. Shares jumped about 14% on the news.

Under the arrangement, Backblaze supplies HDD-based storage tiers underpinning CoreWeave's AI Object Storage, letting CoreWeave customers reach cheaper capacity tiers without code changes. "Storage is the foundation every AI workflow is built on, without it even the world's most powerful compute sits idle," said Backblaze CEO Gleb Budman. Crucially, management's raised full-year outlook, issued in May, did not yet reflect the CoreWeave contract, implying potential upside to guidance as the arrangement ramps over its term.

Why the Development Matters

The deal reframes Backblaze from a slow-growing consumer-and-SMB backup vendor into a credible, if small, supplier to the AI build-out. For years, investors questioned whether its low-cost B2 platform could win serious enterprise workloads against Amazon, Microsoft and Google. Landing an anchor customer of CoreWeave's stature is external validation that AI training and inference pipelines generate vast, cost-sensitive storage demand that hyperscalers price expensively. It also hardens the strategic logic behind Backblaze's pivot toward high-throughput, exabyte-scale storage. The flip side is that Backblaze has now tied a meaningful slice of its future to the AI-capex cycle, and to CoreWeave specifically, a fast-growing but heavily leveraged customer whose own spending plans have unsettled its investors.

Business and Market Context

Founded in 2007 and public since 2021, Backblaze runs two segments. Computer Backup, its legacy flat-fee consumer and business backup service, throws off cash but barely grows. B2 Cloud Storage, an S3-compatible object-storage platform pitched on radically lower prices and free egress, is the growth engine. Over the past two years the company has leaned hard into AI. In 2025 it launched B2 Overdrive, a tier promising terabit-per-second throughput for AI/ML and HPC workloads. In February 2026 it introduced B2 Neo, a white-label object-storage product that lets "neocloud" GPU platforms resell integrated storage, a market Backblaze cites as growing toward $236 billion by 2031. The company now manages more than five exabytes of data. The CoreWeave win slots directly into this thesis: sell dense, HDD-based capacity to compute-rich AI clouds that would rather buy storage than build it themselves.

Financial Position

Backblaze remains a small, unprofitable but improving business. First-quarter 2026 revenue rose 12% year over year to $38.7 million, led by B2's 24% growth to $22.4 million; Computer Backup was flat at $16.2 million. Gross margin expanded to 61% from 56%, and adjusted EBITDA reached $10.1 million, a 26% margin versus 18% a year earlier, evidence the cost discipline is taking hold. The company still posted a GAAP net loss of $6.1 million, or $0.10 per share, and adjusted free cash flow was negative $1.8 million.

Annual recurring revenue hit $158.2 million (up 13%), with B2 ARR of $93.0 million (up 28%); net revenue retention was 103% overall and 110% for B2. Backblaze raised full-year guidance to $161.5–$163.5 million in revenue and a 23–25% adjusted EBITDA margin. The balance sheet is thin, however: $26.3 million in cash and about $45.5 million in total liquid assets, a constraint against the capex a multi-exabyte ramp demands.

The Bull Case

Bulls argue the CoreWeave deal is a proof point, not a one-off. If Backblaze can convert its AI positioning, B2 Overdrive, B2 Neo and now a flagship neocloud reference customer, into a pipeline of similar contracts, revenue growth could re-accelerate well beyond the low-teens pace guidance implies. The economics are improving in tandem: gross margins above 60%, adjusted EBITDA margins in the mid-20s, and AI customer counts up 76% year over year. At roughly $12 a share and a ~$700 million market cap, the stock trades well below where a durable AI-storage growth story would be valued, and the Street's average target near $15 implies further upside if execution holds.

The Bear Case and Principal Risks

Skeptics see a richly narrated stock resting on fragile foundations. The $335 million contract is a total value spread over five years with an unspecified ramp, so near-term revenue may disappoint those extrapolating the headline. Serving multiple exabytes requires heavy capital spending that Backblaze's $26 million cash pile cannot fund internally, raising the prospect of dilutive equity or debt. Concentration is the sharper risk: leaning on CoreWeave, itself carrying enormous capex and debt with spending plans that have rattled its own shareholders, means Backblaze's fortunes now partly track a single, volatile AI counterparty. Meanwhile the legacy backup business is flat, overall net revenue retention of 103% is unremarkable, and the company is still lossmaking. Any AI-capex slowdown would hit hardest here.

What Investors Should Watch Next

Key markers into late 2026: second-quarter results, due in early August, should show whether AI momentum and margin gains are sustained, and whether management quantifies CoreWeave's revenue contribution or lifts guidance again. Watch how Backblaze finances the storage buildout, including any capital raise and its terms. Additional neocloud or B2 Overdrive wins would corroborate the pipeline thesis; a stall, or signs of CoreWeave trimming commitments, would undercut it. B2 net revenue retention and the gross-margin trajectory remain the cleanest read on underlying health.

Conclusion

The CoreWeave agreement is a genuine inflection: it validates years of investment in high-throughput, exabyte-scale storage and hands Backblaze the AI credential it lacked. But validation is not yet transformation. With a thin balance sheet, a five-year ramp of uncertain cadence, and mounting dependence on the AI-capex cycle, the turnaround remains a bet rather than a certainty. Execution over the next few quarters, and how the buildout is funded, will decide whether the re-rating sticks.

This article is for informational purposes only and does not constitute investment advice or a recommendation to buy, sell, or hold any security. Share prices can rise or fall, and past performance does not guarantee future results. Investors should conduct independent research and consult a licensed financial adviser before making investment decisions.