--- title: OpenTelemetry in a Brownfield World - Jimmy Bogard - NDC... description: OpenTelemetry provides a standardized approach to observability in legacy systems. The talk demonstrates migrating brownfield .NET applications from... canonical: https://daily.dev/posts/opentelemetry-in-a-brownfield-world---jimmy-bogard---ndc-copenhagen-2025-6pq23kpfq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenTelemetry in a Brownfield World - Jimmy Bogard - NDC Copenhagen 2025 | daily.dev og:description: OpenTelemetry provides a standardized approach to observability in legacy systems. The talk demonstrates migrating brownfield .NET applications from... og:url: https://daily.dev/posts/opentelemetry-in-a-brownfield-world---jimmy-bogard---ndc-copenhagen-2025-6pq23kpfq og:image: https://api.daily.dev/og/posts/6Pq23kpfQ.png og:image:alt: OpenTelemetry in a Brownfield World - Jimmy Bogard - NDC Copenhagen 2025 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenTelemetry in a Brownfield World - Jimmy Bogard - NDC Copenhagen 2025 **[NDC Conferences](https://daily.dev/sources/ndc)** · 64 min read · 0 upvotes · 0 comments ## Summary OpenTelemetry provides a standardized approach to observability in legacy systems. The talk demonstrates migrating brownfield .NET applications from vendor-specific logging (log4net) and tracing solutions to OpenTelemetry standards. Key steps include bridging existing logging frameworks to Microsoft.Extensions.Logging, enabling distributed tracing across microservices, and configuring exporters for tools like Zipkin. The approach emphasizes incremental migration through small, verifiable steps rather than wholesale rewrites, allowing teams to modernize observability without vendor lock-in while maintaining backward compatibility with .NET Framework applications. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Demystifying OpenTelemetry: Why You Shouldn’t Fear Observability in Traditional Environments](https://daily.dev/posts/demystifying-opentelemetry-why-you-shouldn-t-fear-observability-in-traditional-environments-omtblrf57) · OpenTelemetry · 2 upvotes · 0 comments - [An End-to-End Cloud Native Observability Framework](https://daily.dev/posts/an-end-to-end-cloud-native-observability-framework-4gzq4zqow) · The New Stack · 0 upvotes · 0 comments --- Tags: [#devops](https://daily.dev/tags/devops), [#.net](https://daily.dev/tags/.net), [#microservices](https://daily.dev/tags/microservices), [#observability](https://daily.dev/tags/observability), [#opentelemetry](https://daily.dev/tags/opentelemetry) [View this post on daily.dev](https://daily.dev/posts/opentelemetry-in-a-brownfield-world---jimmy-bogard---ndc-copenhagen-2025-6pq23kpfq) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"OpenTelemetry in a Brownfield World - Jimmy Bogard - NDC Copenhagen 2025","url":"https://daily.dev/posts/opentelemetry-in-a-brownfield-world---jimmy-bogard---ndc-copenhagen-2025-6pq23kpfq","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/opentelemetry-in-a-brownfield-world---jimmy-bogard---ndc-copenhagen-2025-6pq23kpfq"},"datePublished":"2026-01-20T12:15:21.338Z","dateModified":"2026-01-20T12:15:46.431Z","description":"OpenTelemetry provides a standardized approach to observability in legacy systems. 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