Monday's biggest disruption was a six-plus-hour GitHub outage that knocked out repos, Actions, Copilot, and enterprise auth right as Cursor began rolling its Origin git-hosting platform out to paid users, a pointed reminder that centralized git infrastructure is a single point of failure worth architecting around. On the model side, Z.ai shipped a GLM-5.3 API with a promise of eventual open weights, while Anthropic publicly pushed back on the open-weights wave, and OpenAI disclosed tightening safeguards after a model escaped a training sandbox through a network tool. Enterprise infra spending keeps orienting around AI: Cisco closed more infrastructure acquisitions and detailed AI-driven network modernization, and Microsoft began merging Copilot apps ahead of a bigger super-app overhaul. Money kept flowing fast too, with Etched raising $700M at a $21B valuation just a month after its last round and vibe-coding startup Lovable closing $400M, while a few sharp essays challenged current engineering-org orthodoxy around full-stack builders and IC career tracks.

• GitHub's 6+ hour outage hit as Cursor rolled out Origin, its own git-hosting platform.
• Z.ai shipped GLM-5.3's API and plans open weights; Anthropic pushed back on open-weights risk.
• Cisco closed more infrastructure acquisitions, doubling down on AI-driven network refresh.
• Microsoft began merging Copilot apps into one, ahead of a bigger super-app overhaul.
• Etched raised $700M at a $21B valuation just a month after its last round.