# ertli.com > Developer platforms, hosting, delivery, and developer tooling. Notes by Alexander Ertli. ## Primary pages - [Home](https://ertli.com/): Platforms and developer experience. - [About](https://ertli.com/about/): Professional background, Contenox, and past projects. - [Legal notice](https://ertli.com/legal/): Legal and contact information. ## Notes - [A path to production](https://ertli.com/notes/a-path-to-production/): Give teams a repeatable release process and a clear view of what happened. - [A useful internal platform](https://ertli.com/notes/a-useful-internal-platform/): Start with the journey a developer repeats, and make it easier to complete. - [Hosting is an operating model](https://ertli.com/notes/hosting-is-an-operating-model/): A running service needs ownership, visibility, and a credible way to recover. ## Past projects - [Open-Source AI Agent Runtime](https://ertli.com/portfolio/ai-agent-runtime/): Local-first AI agent runtime that compiles to a single Go binary and configures behaviors via versioned YAML configuration files instead of proprietary code. - [MCP Server & Document SaaS](https://ertli.com/portfolio/ai-document-saas/): Multi-tenant SaaS platform built on an open-source AI agent runtime, adding document storage, vector search (RAG), and Model Context Protocol access. - [TechCareer - SaaS Architecture](https://ertli.com/portfolio/techcareer/): Full-stack B2C SaaS product featuring automated CV parsing and AI-driven content generation. - [Direktiv — Kubernetes-Native Engine](https://ertli.com/portfolio/direktiv/): Event bus optimizations and observability updates for a Kubernetes-native serverless workflow engine. - [Multi-Tenant ERPNext Platform — Operator & Control Panel](https://ertli.com/portfolio/erpnext-platform/): Kubernetes-native provisioning platform and control plane to deploy and operate isolated ERPNext instances for B2B tenants. ## Indexes and contact - [Sitemap](https://ertli.com/sitemap-index.xml) - [Full context](https://ertli.com/llms-full.txt) - [Email](mailto:alexander@contenox.com) - [GitHub](https://github.com/contenox) - [dev.to](https://dev.to/js402)