Plexus: AI Agent Orchestration for Scalable .NET Enterprise Solutions
Built by and for .NET teams. Stand up local agents in minutes with ASP.NET, then scale out seamlessly with Orleans — all powered by Microsoft Semantic Kernel.
Why Plexus for Enterprise AI?
A platform your existing .NET team will love — and your architects can trust.
Native .NET Integration
C#, ASP.NET, DI, config, and logging — no language switch. Build agents using familiar patterns and tooling (Visual Studio, pipelines, tests).
Massive Scalability by Design
Powered by Microsoft Orleans. Run millions of lightweight agents (grains), auto‑balance across silos, and scale out by adding servers.
Rapid Development & Delivery
Spin up locally with a few lines in a standard ASP.NET app; switch to distributed mode for production without major refactoring.
Enterprise‑Ready Features
Multi‑tenant isolation, OAuth2/API Key auth for secure tool calls, job scheduling, event triggers, and an admin console for live oversight.
Multi‑Model Flexibility
Bring your own model or use OpenAI, Azure OpenAI, Hugging Face, and more. Choose the right model per task — no vendor lock‑in.
Observability & Control
Trace agent decisions, review conversations, and apply guardrails. Integrates with your existing logging/monitoring for compliance.
Built for .NET — Seamless, Familiar Development
Plexus plugs into ASP.NET Core naturally: expose agents via Blazor components, Web API endpoints, or WebSockets using the patterns you already know. As a .NET library, Plexus embraces DI, configuration, and logging from day one.
Under the hood, Plexus builds on Microsoft Semantic Kernel (enterprise‑ready AI SDK) and the Orleans virtual actor framework. You get the robustness of the Microsoft stack with a developer‑first agent model.
- Develop and debug agents like any C# service — set breakpoints, inspect state, step through calls.
- Reuse your CI/CD, testing frameworks, and deployment practices without a re‑platform.
- Admin tool provides real‑time visibility into conversations, prompts, and tool calls.
Microsoft‑Aligned Architecture
Semantic Kernel for LLM integration, Orleans for scale, ASP.NET for hosting — a cohesive path from prototype to production inside the .NET ecosystem.
Scalable by Design — Orleans‑Powered Performance
Each Plexus agent runs as an Orleans grain — an isolated unit of state and logic activated on demand. Orleans automatically balances grains across silos, deactivates when idle, and reactivates on failure for resilience.
Scale transparently: add servers to increase throughput without sharding or custom partitioning. Persist state using Orleans providers so long‑running conversations and memory survive restarts.
Rapid Development with a Developer‑First Approach
Define agents as simple C# classes or interfaces with tools and memory, then host them in a standard ASP.NET application. Local development feels familiar — use the same project structure, patterns, and debugging workflow you already know.
Compose multi‑agent workflows where agents call each other or defer tasks asynchronously. Orchestrate chat and event‑driven patterns without custom plumbing — Plexus handles messaging over Orleans and LLM orchestration via Semantic Kernel.
Integrate anywhere
Expose agents via Blazor, REST, or WebSockets. Use tools for HTTP, SQL, Graph, and your internal systems. Swap models per scenario.
Enterprise‑Grade Security and Management
Security, isolation, observability, and governance — ready for production.
Authentication & Secure Integration
Built‑in OAuth2/API Key module so agents can safely call protected enterprise APIs and data sources with governed credentials.
Isolation & Multi‑Tenancy
Agents are grouped into user or entity pools with no cross‑talk by default. State is isolated per tenant to keep data boundaries tight.
Monitoring & Control
Admin console provides real‑time insight into conversations, prompts, and tool calls; inject messages or corrections when necessary.
Scheduled Jobs & Events
Cron‑like scheduling and event triggers wake agents to perform background tasks reliably across the cluster, even during failures.
Compliance & Auditing
Log interactions to your existing providers (Serilog, App Insights, etc.). Enforce policies and review tool usage for regulated workloads.
Fast‑Track from Prototype to Production
Start small and scale without a rewrite. Proof‑of‑concept agents built by a couple of developers can evolve directly into mission‑critical systems using the same architecture — just switch to distributed mode and add capacity.
Backed by Semantic Kernel (enterprise‑grade, production‑ready) and Orleans (battle‑tested at Microsoft), Plexus gives .NET organizations a clear, reliable path to ship AI at scale.
Outcomes for .NET teams
- Shorter learning curve — no language or platform switch.
- Lower maintenance — unified Microsoft stack and tooling.
- Confidence to scale — proven runtime and SDKs.
Empower your .NET enterprise with Plexus
See how your existing team can deliver agentic AI — fast, secure, and at scale — without leaving the .NET ecosystem.
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Semantic Kernel + Orleans • Azure‑ready