The 10 Biggest Tech M&A Deals Of 2025
by Rick Whiting, CRN
The AI wave continues to transform the IT industry and in 2025 it has certainly been a major driver for many of the big-ticket merger and acquisition deals that were either announced or concluded in 2025.
This year saw a number of significant acquisition deals involving both IT vendors and solution providers. Most notable were Google's plan to buy cloud security superstar Wiz for a mind-boggling $32 billion and the completion of HPE's $13.4 billion acquisition of Juniper Networks.
Established IT companies snapped up startups with leading-edge AI technology as they look to quickly bolster their product portfolios with AI capabilities and expertise.
Capgemini, for example, completed a $3.3 billion deal to acquire India-based WNS in a significant play to build scale with the business process services needed to provide agentic AI services. Cisco, meanwhile, is buying enterprise AI platform company NeuralFabric in a deal announced in November, while Intel is reportedly looking to acquire AI chip developer SambaNova Systems.
Other examples include HP Inc.'s purchase of the software and intellectual property assets from Humane, Datadog's acquisition of Metaplane and Alation's deal to buy Numbers Station.
Cato Networks expanded into AI security with September purchase of startup Aim Security while Check Point Software Technologies completed its acquisition of AI security startup Lakera in November.
The cybersecurity space, which some observers have said is ripe for consolidation, saw a great deal of merger and acquisition activity in 2025. In addition to the mega-billions deals listed in this slideshow, other IT security industry acquisitions include Proofpoint's $1.8 billion acquisition of Microsoft 365 security specialist Hornetsecurity, Sophos' completion of its $859 million acquisition of XDR specialist Secureworks, Arctic Wolf's $160 million purchase of endpoint security provider Cylance, F5's $180 million acquisition of CalypsoAI, Okta's acquisition of privileged access management startup Axiom, and Zscaler's acquisitions of Red Canary and SPLX.
Cybersecurity giants Palo Alto Networks and CrowdStrike struck multiple acquisition deals in 2025 with the latter moving to acquire next-generation SIEM developer Onum in August and AI security provider Pangea in September.
Established IT vendors acquired companies to expand their expertise in specific market segments. IBM, for example, increased its capabilities in digital transformation for customers in regulated industries with its agreement to buy SAP services partner Cognitus.
While dollar value is certainly a factor in the following ranking, some mergers and acquisitions have a greater impact on the IT industry in general—and the channel in particular—and that figures into the rankings. In many cases the price tag of the acquisition is not disclosed.
Some 10-figure acquisition deals that just missed making this list but were nevertheless significant include the aforementioned Proofpoint deal to buy Hornetsecurity and Databricks' $1 billion purchase of database startup Neon in May.
Even mergers and acquisitions that are rumored—and in some cases never happen—can be big news in the IT industry. In early December reports surfaced that ServiceNow was in talks to buy cyber exposure management vendor Armis in a deal that could be valued at up to $7 billion—which would put it high up on this year's M&A list should it happen.
Here's a look at the IT industry's biggest acquisition deals in 2025, starting with No. 10 and working up to No. 1. Some deals were announced last year and were completed this year. Others have been announced but are still working their way through regulatory and/or shareholder approvals before they wrap up—some not expected to do so until 2026.