Editor's note
I pulled together a pretty mixed issue this time, which is exactly how I like it. The VS Code multi-agent orchestration piece and the Copilot testing launch both show where .NET tooling is headed, while the EF Core join article is a practical win for day-to-day query work.
AI agents, EF Core joins, and performance
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Today's Articles
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Jasen's take on today's picks
Hands On with New Multi-Agent Orchestration in VS Code
VS Code’s multi-agent orchestration makes AI workflows feel less like prompts and more like traceable work.
C# 13 & .NET 9 — Part 14: Web Services, RESTful API, gRPC, Pagination in APIs, Postman and Swagger
A solid REST/gRPC refresher for anyone building APIs, with pagination and tooling basics in the mix.
Testing for Memory Allocations in Unity
If you care about allocations, the Unity testing approach is a useful pattern to steal.
Understanding Domain-Driven Design (DDD) in .NET
DDD explanations are easy to overcomplicate; this one keeps the focus on modeling the domain.
How LeftJoin and RightJoin Work in EF Core .NET 10
EF Core LeftJoin/RightJoin is the kind of practical upgrade that saves a lot of GroupJoin boilerplate.
GitHub Copilot Testing for .NET Brings AI-powered Unit Tests to Visual Studio 2026
Copilot Testing for .NET is the most immediately useful AI item here: faster test generation, fewer setup steps.
Why Enterprises Prefer .NET Development Services: Real Industry Insights & Benefits
Identity via the CLI is still one of those things people need written down clearly.
.NET Performance Superpower: Understanding ValueTask (and When Not to Use It)
ValueTask is powerful, but the real value is knowing when not to reach for it.
Dotnet Core Identity With .NET CLI
A good reminder that records are a tool, not a default answer, especially once EF Core gets involved.












