Every major software category is still growing in dollar terms. The squeeze shows up elsewhere: in growth rates, in budget shares, in mergers, and in what chief information officers say they would replace. This note maps where enterprise software spend sits in 2026, how fast each category is moving, and where the pressure is landing.
Security and CRM are the two largest pots of business software, with cloud infrastructure larger still. ERP, which led the late 1990s, is now less than half the size of CRM even with HR software counted inside it.
Gartner end-user spending forecasts for 2026 1, 4, 5. AI software is shown separately below because Gartner counts AI inside these categories as well.
Infrastructure is where the acceleration is. The application categories cluster tightly between 11% and 17%, which is healthy, but none is breaking away. Email and authoring is the surprise, lifted by AI bundled into office suites.
Calculated from Gartner's 2025 and 2026 figures for each category 1, 4, 5.
Gartner's AI forecast contains the only outright decline in this note. Chatbots embedded in software peak in 2027 and then fall, as agents that act rather than answer take over the same budget. It is a useful reminder that the first version of a technology is rarely the one that keeps the money.
Gartner AI spending forecast, May 2026 2.
Gartner 2Q26 AI forecast; only the published points are plotted 6.
Each panel has its own scale, so read the shape rather than comparing heights across panels. Dashed segments mark a forecast or a change in how the analyst defines the market; a gap marks a definition break too large to join.
CRM, database, IaaS and supply chain are vendor-revenue series; security is end-user spending. Gartner restates earlier years with each edition, so points from different editions do not always sit on one clean line 7-14.
Asked which categories they had seriously considered switching vendor on in the past year, CIOs put customer service software at the top. The systems of record (ERP, IT service management, the productivity suite) are the stickiest. The pattern matches the rest of the evidence: the pressure lands on the layers that sit on top of the core, where an AI agent can plausibly do the job.
Redpoint survey of 141 CIOs, March 2026 3.
Gartner CMO Spend Survey 15. Vendor revenue still grows; the share of budget does not.
IDC 16, 17. The 2024 bar is the wider UC&C market.
Sizes come from the most recent year with a published figure, so the years differ by row. Smaller categories rarely get a Gartner or IDC market size; where the figure comes from another analyst or from vendor results, the source column says so.
| Category | Latest size | Growth | Momentum | Reading | Source |
|---|
The core keeps growing. CRM, security, data and ERP will all be bigger in 2030 than today. Systems of record are hard to rip out, and AI needs somewhere to read from and write to.
The layers on top are where budgets get found. Enablement, engagement, conferencing, marketing technology and standalone data tools are merging, slowing or losing budget share. Nearly half of AI spending is being funded by cutting other software, and these are the easiest lines to cut.
Customer service is the most contested ground in software. It is the largest part of CRM, the category CIOs most want to replace, and the main target for AI agents. The money will not disappear; it will move from seats and agents to outcomes, and to whichever vendor can prove the outcome.