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Software as a Service has become one of the defining business models in enterprise technology. What once looked like a fast-growing software segment is now deeply embedded across collaboration, CRM, finance, cybersecurity, HR, analytics, and industry-specific software markets.
Quick Answer (2026): Gartner forecast worldwide end-user spending on public cloud services to reach $723.4 billion in 2025, up from $595.7 billion in 2024. Gartner also forecast $5.43 trillion in total worldwide IT spending in 2025, showing the scale of the broader software and cloud market.
| Metric | Figure | Year |
|---|---|---|
| Worldwide public cloud end-user spending | $723.4 billion | 2025 |
| Worldwide public cloud end-user spending | $595.7 billion | 2024 |
| Worldwide IT spending | $5.43 trillion | 2025 |
| 2026 worldwide IT spending forecast | $6.08 trillion | 2026 |
There is no single universally accepted “SaaS market size” number because analysts draw the category differently. The cleanest high-authority proxy is cloud and enterprise software spending. Gartner forecast worldwide public cloud end-user spending would reach $723.4 billion in 2025, up sharply from $595.7 billion in 2024.
That makes the old 2019 “$100 billion revenue run rate” framing far too dated for a 2026 SaaS overview page.
SaaS adoption keeps expanding because organizations want easier deployment, lower maintenance burdens, subscription economics, and faster product updates. Gartner’s broader forecast of $5.43 trillion in worldwide IT spending for 2025 also helps show the scale of software and cloud demand across the enterprise landscape.
Most SaaS companies now sit inside a much larger cloud stack. That is why current SaaS overviews should connect application-level growth to broader public-cloud spending and enterprise IT budgets rather than relying on old single-year startup-era milestones.
Gartner forecast worldwide public cloud end-user spending of $723.4 billion in 2025.
Gartner put 2024 worldwide public cloud end-user spending at $595.7 billion.
Gartner forecast $5.43 trillion in worldwide IT spending for 2025.
Because public cloud and enterprise software spending are among the clearest current indicators of SaaS scale and adoption.
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