Add blog post for go.opentelemetry.io switch (open-telemetry#5087)

Co-authored-by: Tiffany Hrabusa <30397949+tiffany76@users.noreply.github.com>
Co-authored-by: Patrice Chalin <chalin@users.noreply.github.com>

Author: 3 people

content/en/blog/2024/go-opentelemetry-io.md

@@ -0,0 +1,83 @@
+---
+title: Planned Migration for go.opentelemetry.io
+date: 2024-08-27
+author: '[Mike Dame](https://github.com/damemi) (Google)'
+body_class: otel-with-contributions-from
+issue: 5086
+sig: Go SIG
+cSpell:ignore: vanityurls Yahn
+---
+
+With contributions from Tyler Yahn and Austin Parker.
+
+## TL;DR
+
+The app that serves requests to [go.opentelemetry.io] will be migrating to a new
+host on September 5, 2024 at approximately 11:00AM Eastern Time. **There are no
+changes required from you**. We are making this announcement because it is
+possible, but unlikely, that there might be downtime during this transition.
+
+## Details
+
+OpenTelemetry is planning to migrate the application that serves all requests
+for `go.opentelemetry.io` to a new host project on September 5, 2024. On this
+date, the current DNS entries for `go.opentelemetry.io` will be updated to point
+to the new host.
+
+This should be a seamless transition, but there is the possibility of downtime
+during this time. The OpenTelemetry engineers will be actively monitoring the
+transition to minimize the risk.
+
+### Affected resources
+
+In the unlikely event of issues, the scope of these planned changes will affect
+Go package downloads for the following domains:
+
+- `go.opentelemetry.io/auto`
+- `go.opentelemetry.io/build-tools`
+- `go.opentelemetry.io/collector-contrib`
+- `go.opentelemetry.io/collector`
+- `go.opentelemetry.io/contrib`
+- `go.opentelemetry.io/otel`
+- `go.opentelemetry.io/proto`
+
+Note that this includes users of any of the following artifacts:
+
+- OpenTelemetry Go language libraries (including Contrib)
+- OpenTelemetry Go Auto-Instrumentation libraries
+- OpenTelemetry Collector libraries (including Contrib)
+- OpenTelemetry Collector Builder.
+
+## What you need to do
+
+**There is no action required from you.** All imports using
+`go.opentelemetry.io` (and submodule paths, for example
+`go.opentelemetry.io/otel`) will continue to work. There are no plans to change
+this.
+
+## What you might notice
+
+There is the possibility of the [go.opentelemetry.io] domain experiencing
+downtime during this transition. If this happens, you might see projects that
+import `go.opentelemetry.io` modules failing to compile.
+
+This could occur due to several factors, including delays in DNS propagation or
+misconfiguration. We will have multiple maintainers working synchronously during
+this time to minimize any downtime that occurs.
+
+If you experience any issues following this transition, please reach out on
+[Slack #otel-go](https://cloud-native.slack.com/archives/C01NPAXACKT) or
+[create an issue](https://github.com/open-telemetry/opentelemetry-go-vanityurls/issues/new)
+over
+[opentelemetry-go-vanityurls](https://github.com/open-telemetry/opentelemetry-go-vanityurls).
+
+## Why are we making this change?
+
+This transition both helps modernize the application serving requests and
+handles an ownership transfer, ensuring that we are able to continue providing
+OpenTelemetry Go packages in a secure and robust manner.
+
+For more details, see
+[the community GitHub issue proposing this change](https://github.com/open-telemetry/community/issues/2260).
+
+[go.opentelemetry.io]: https://go.opentelemetry.io

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