https://e21.ai/blog Technical writing on sovereign AI infrastructure, agentic orchestration, AI memory, and the future of desktop and edge AI — from the e21 engineering team. en-GB Sat, 22 Aug 2026 00:00:00 GMT https://e21.ai/blog/every-os-is-becoming-an-agent-host https://e21.ai/blog/every-os-is-becoming-an-agent-host Microsoft is rebuilding Windows as a runtime for agents. That vindicates the OS-shaped argument — and re-opens the question of whose machine the agent runs on. Sat, 22 Aug 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Architecture https://e21.ai/blog/the-enterprise-brain-needs-a-memory-you-can-trust https://e21.ai/blog/the-enterprise-brain-needs-a-memory-you-can-trust The industry has worked out that agents which forget are not worth much. The harder problem is what happens when they all remember the same thing — and it is wrong. Thu, 13 Aug 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Architecture https://e21.ai/blog/publish-the-number-that-holds-you-to-account https://e21.ai/blog/publish-the-number-that-holds-you-to-account Most infrastructure vendors publish the benchmarks that flatter them. The more useful discipline is shipping the measurement a customer would use to prove you wrong. Thu, 30 Jul 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Engineering https://e21.ai/blog/where-your-data-actually-goes https://e21.ai/blog/where-your-data-actually-goes "Your data never leaves the UK" is the easiest sentence in enterprise AI to write and one of the hardest to keep. Here is the honest version instead. Thu, 16 Jul 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Security https://e21.ai/blog/the-spend-question-nobody-can-answer https://e21.ai/blog/the-spend-question-nobody-can-answer Ask most organisations what a single team spent on AI last month and you get an invoice total and a shrug. That gap is why AI budgets get frozen rather than grown. Thu, 02 Jul 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Product https://e21.ai/blog/you-cannot-audit-what-you-cannot-attribute https://e21.ai/blog/you-cannot-audit-what-you-cannot-attribute When an AI agent spends money or changes a setting, most stacks cannot say who authorised it. That is not a logging gap — it is a modelling failure. Thu, 18 Jun 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Security https://e21.ai/blog/what-an-ai-operating-system-actually-is https://e21.ai/blog/what-an-ai-operating-system-actually-is Everyone is calling something an AI OS. Here is the test we apply, why the analogy to a real operating system holds, and what it changes about how you buy. Thu, 04 Jun 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Architecture https://e21.ai/blog/welcome-to-e21-insights https://e21.ai/blog/welcome-to-e21-insights What we'll be writing about, who's writing it, and why we're being upfront when AI helps draft a piece. Sat, 30 May 2026 00:00:00 GMT hi@e21.ai (Lee Norvall) Insights