Apple acquired certain assets and employees from SigScalr, the company behind the open-source observability platform SigLens, on March 12, 2026, a deal that remained undisclosed until the European Commission published about it today. The acquisition surfaced because Apple, as a Digital Markets Act gatekeeper, must notify the EU when it acquires companies within that regulatory scope.
SigLens is a developer-focused tool for collecting, searching, and analyzing logs, metrics, and traces from applications and infrastructure. The platform positioned itself as a cost-efficient alternative to Splunk, Datadog, and Elasticsearch, with claims of being 100x more efficient than Splunk or Elastic, 54x faster than ClickHouse, and 1025x faster than Elasticsearch. Following the acquisition, SigScalr’s official website went offline and SigLens’ main GitHub repository was archived and made read-only.
Apple completed the acquisition four months before disclosing it, revealing the deal only because regulatory filing requirements forced the issue.
The acquisition fits a pattern of aggressive internal investment in cloud infrastructure. Apple is building observability systems to monitor its own operations and the infrastructure underpinning Apple Intelligence. At WWDC 2026, Apple announced free access to Apple Foundation Models running on Private Cloud Compute for developers with fewer than two million first-time App Store downloads. That expansion requires reliable monitoring and logging at scale, exactly what SigLens provides. Job postings from Apple show active hiring for engineers to “design and build cloud-native solutions that empower observability for Search, AIML Infrastructure, and Apple Intelligence products.”
Observability systems at Apple’s scale are not simple projects. As Apple Intelligence expands to more devices and use cases, the company needs to track billions of requests across its Private Cloud Compute infrastructure, identify bottlenecks, debug failures in real time, and optimize resource allocation. Off-the-shelf solutions like Datadog or Splunk would be prohibitively expensive at that volume and would require sharing sensitive infrastructure data with a third party. Building or acquiring in-house technology eliminates both problems.
Apple bought expertise and technology to run its own rapidly expanding cloud operations. SigLens’ efficiency claims matter because Apple Intelligence and Private Cloud Compute are computationally expensive. Better observability systems mean better resource use and faster debugging when something breaks.
The open-source question remains unresolved. SigLens was publicly available before the acquisition. Whether Apple integrates it into closed infrastructure, releases it separately as a developer tool, or archives it entirely is unclear. For now, the GitHub archive suggests it is headed behind closed doors.
