diff --git a/blog/app.yaml b/blog/app.yaml
index b2aac6e..a0d983c 100644
--- a/blog/app.yaml
+++ b/blog/app.yaml
@@ -1,5 +1,14 @@
+# This app is deployed via Cloud Build as directed by cloudbuild.yaml.
+# Do not deploy directly.
+
 service: blog
-runtime: go114
+runtime: go115
+main: ./blog
+
+handlers:
+- url: /.*
+  script: auto
+  secure: always
 
 env_variables:
   BLOG_ANALYTICS: |
@@ -11,29 +20,3 @@
     gtag("config", "UA-11222381-3");
     gtag("config", "UA-49880327-6");
     </script>
-
-default_expiration: "7d"
-
-handlers:
-
-# Keep these static file handlers in sync with blog.go.
-# They're here for improved latency across global regions.
-- url: /favicon.ico
-  static_files: static/favicon.ico
-  upload: static/favicon.ico
-  secure: always
-- url: /fonts.css
-  static_files: static/fonts.css
-  upload: static/fonts.css
-  secure: always
-- url: /fonts
-  static_dir: static/fonts
-  http_headers:
-    Content-Type: application/font-woff
-  secure: always
-
-# This is here to redirect all HTTP traffic to an HTTPS URL
-# with the same path.
-- url: /.*
-  script: auto
-  secure: always
diff --git a/blog/appengine.go b/blog/appengine.go
deleted file mode 100644
index 0fa729f..0000000
--- a/blog/appengine.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2013 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This file implements an App Engine blog server.
-
-package main
-
-import (
-	"html/template"
-	"log"
-	"net/http"
-	"os"
-
-	"golang.org/x/tools/blog"
-)
-
-func gaeMain() {
-	config.ContentPath = "_content/"
-	config.TemplatePath = "_template/"
-	config.AnalyticsHTML = template.HTML(os.Getenv("BLOG_ANALYTICS"))
-	s, err := blog.NewServer(config)
-	if err != nil {
-		log.Fatalln(err)
-	}
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Strict-Transport-Security", "max-age=31536000; preload")
-		s.ServeHTTP(w, r)
-	})
-	port := os.Getenv("PORT")
-	if port == "" {
-		port = "8080"
-	}
-	log.Fatal(http.ListenAndServe(":"+port, nil))
-}
diff --git a/blog/blog.go b/blog/blog.go
index 9277c76..04c4851 100644
--- a/blog/blog.go
+++ b/blog/blog.go
@@ -7,52 +7,145 @@
 package main
 
 import (
+	"flag"
+	"html/template"
+	"log"
+	"net"
 	"net/http"
+	"os"
+	"path/filepath"
 	"strings"
-	"time"
 
 	"golang.org/x/tools/blog"
-	"golang.org/x/website/content/static"
-
 	_ "golang.org/x/tools/playground"
+	"golang.org/x/website"
+	"golang.org/x/website/internal/backport/httpfs"
+)
+
+var (
+	httpAddr = flag.String("http", "localhost:8080", "HTTP listen address")
+	reload   = flag.Bool("reload", false, "reload content on each page load")
+
+	runningOnAppEngine = os.Getenv("GAE_ENV") != ""
+	blogRoot           = "./"
 )
 
 const hostname = "blog.golang.org" // default hostname for blog server
 
 var config = blog.Config{
-	Hostname:     hostname,
-	BaseURL:      "https://" + hostname,
-	GodocURL:     "https://golang.org",
-	HomeArticles: 5,  // articles to display on the home page
-	FeedArticles: 10, // articles to include in Atom and JSON feeds
-	PlayEnabled:  true,
-	FeedTitle:    "The Go Programming Language Blog",
+	Hostname:      hostname,
+	BaseURL:       "https://" + hostname,
+	GodocURL:      "https://golang.org",
+	HomeArticles:  5,  // articles to display on the home page
+	FeedArticles:  10, // articles to include in Atom and JSON feeds
+	PlayEnabled:   true,
+	FeedTitle:     "The Go Programming Language Blog",
+	ContentPath:   "_content/",
+	TemplatePath:  "_template/",
+	AnalyticsHTML: template.HTML(os.Getenv("BLOG_ANALYTICS")),
 }
 
-func init() {
+func main() {
+	if runningOnAppEngine {
+		port := os.Getenv("PORT")
+		if port == "" {
+			port = "8080"
+		}
+		*httpAddr = ":" + port
+	}
+
+	flag.Parse()
+
+	if _, err := os.Stat("blog/_content/10years"); err == nil {
+		blogRoot = "blog/"
+	}
+	config.ContentPath = blogRoot + config.ContentPath
+	config.TemplatePath = blogRoot + config.TemplatePath
+
+	h, err := blogHandler()
+	if err != nil {
+		log.Fatal(err)
+	}
+	http.Handle("/", h)
+
+	ln, err := net.Listen("tcp", *httpAddr)
+	if err != nil {
+		log.Fatal(err)
+	}
+	log.Println("Listening on addr", *httpAddr)
+	log.Fatal(http.Serve(ln, nil))
+}
+
+func blogHandler() (http.Handler, error) {
+	var h http.Handler
+	if *reload {
+		h = http.HandlerFunc(reloadingBlogServer)
+	} else {
+		s, err := blog.NewServer(config)
+		if err != nil {
+			return nil, err
+		}
+		h = s
+	}
+	h = maybeStatic(h)
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if runningOnAppEngine {
+			w.Header().Set("Strict-Transport-Security", "max-age=31536000; preload")
+		}
+		h.ServeHTTP(w, r)
+	})
+
 	// Redirect "/blog/" to "/", because the menu bar link is to "/blog/"
 	// but we're serving from the root.
 	redirect := func(w http.ResponseWriter, r *http.Request) {
 		http.Redirect(w, r, "/", http.StatusFound)
 	}
-	http.HandleFunc("/blog", redirect)
-	http.HandleFunc("/blog/", redirect)
+	mux.HandleFunc("/blog", redirect)
+	mux.HandleFunc("/blog/", redirect)
 
 	// Keep these static file handlers in sync with app.yaml.
-	static := http.FileServer(http.Dir("static"))
-	http.Handle("/favicon.ico", static)
-	http.Handle("/fonts.css", static)
-	http.Handle("/fonts/", static)
+	static := http.FileServer(http.Dir(blogRoot + "static"))
+	mux.Handle("/favicon.ico", static)
+	mux.Handle("/fonts.css", static)
+	mux.Handle("/fonts/", static)
+	mux.Handle("/lib/godoc/", http.FileServer(httpfs.FS(website.Content)))
 
-	http.Handle("/lib/godoc/", http.StripPrefix("/lib/godoc/", http.HandlerFunc(staticHandler)))
+	// Redirects in redirect.go.
+	for old, new := range redirects {
+		new := new // for closure
+		mux.HandleFunc(old, func(w http.ResponseWriter, r *http.Request) {
+			http.Redirect(w, r, "/"+new, http.StatusMovedPermanently)
+		})
+	}
+
+	return mux, nil
 }
 
-func staticHandler(w http.ResponseWriter, r *http.Request) {
-	name := r.URL.Path
-	b, ok := static.Files[name]
-	if !ok {
-		http.NotFound(w, r)
+// maybeStatic serves from _static if possible,
+// or else defers to the fallback handler.
+func maybeStatic(fallback http.Handler) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		p := r.URL.Path
+		if strings.Contains(p, ".") && !strings.HasSuffix(p, "/") {
+			f := filepath.Join("_static", p)
+			if _, err := os.Stat(f); err == nil {
+				http.ServeFile(w, r, f)
+				return
+			}
+		}
+		fallback.ServeHTTP(w, r)
+	}
+}
+
+// reloadingBlogServer is an handler that restarts the blog server on each page
+// view. Inefficient; don't enable by default. Handy when editing blog content.
+func reloadingBlogServer(w http.ResponseWriter, r *http.Request) {
+	s, err := blog.NewServer(config)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	http.ServeContent(w, r, name, time.Time{}, strings.NewReader(b))
+	s.ServeHTTP(w, r)
 }
diff --git a/blog/blog_test.go b/blog/blog_test.go
new file mode 100644
index 0000000..371d682
--- /dev/null
+++ b/blog/blog_test.go
@@ -0,0 +1,19 @@
+// Copyright 2018 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"testing"
+
+	"golang.org/x/website/internal/webtest"
+)
+
+func TestServer(t *testing.T) {
+	h, err := blogHandler()
+	if err != nil {
+		t.Fatal(err)
+	}
+	webtest.TestHandler(t, "testdata/blog.txt", h)
+}
diff --git a/blog/cloudbuild.yaml b/blog/cloudbuild.yaml
index 3d6559d..12c65d7 100644
--- a/blog/cloudbuild.yaml
+++ b/blog/cloudbuild.yaml
@@ -8,8 +8,7 @@
     dir: blog
   - name: gcr.io/cloud-builders/gcloud
     entrypoint: bash
-    args: ["../go-app-deploy.sh", "app.yaml"]
-    dir: blog
+    args: ["./go-app-deploy.sh", "blog/app.yaml"]
   - name: mirror.gcr.io/library/golang
     args: [
       "go", "run", "./cmd/versionprune", "--dry_run=false",
diff --git a/blog/go.mod b/blog/go.mod
deleted file mode 100644
index 949db4e..0000000
--- a/blog/go.mod
+++ /dev/null
@@ -1,8 +0,0 @@
-module golang.org/x/website/blog
-
-go 1.11
-
-require (
-	golang.org/x/tools v0.1.1-0.20210427153610-6397a11608ad
-	golang.org/x/website v0.0.0-20200611220721-d72cde69aaaf
-)
diff --git a/blog/go.sum b/blog/go.sum
deleted file mode 100644
index 287ff4b..0000000
--- a/blog/go.sum
+++ /dev/null
@@ -1,296 +0,0 @@
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diff --git a/blog/local.go b/blog/local.go
deleted file mode 100644
index 82e3607..0000000
--- a/blog/local.go
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2013 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This file implements a stand-alone blog server.
-
-package main
-
-import (
-	"flag"
-	"log"
-	"net"
-	"net/http"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-
-	"golang.org/x/tools/blog"
-)
-
-var (
-	httpAddr     = flag.String("http", "localhost:8080", "HTTP listen address")
-	contentPath  = flag.String("content", "_content/", "path to content files")
-	templatePath = flag.String("template", "_template/", "path to template files")
-	staticPath   = flag.String("static", "_static/", "path to static files")
-	websitePath  = flag.String("website", defaultWebsitePath(), "path to lib/godoc static files")
-	reload       = flag.Bool("reload", false, "reload content on each page load")
-)
-
-func defaultWebsitePath() string {
-	out, err := exec.Command("go", "list", "-f", "{{.Dir}}", "golang.org/x/website/content/static").CombinedOutput()
-	if err != nil {
-		log.Printf("warning: locating -website directory: %v", err)
-		return ""
-	}
-	dir := strings.TrimSpace(string(out))
-	return dir
-}
-
-// maybeStatic serves from one of the two static directories
-// (-static and -website) if possible, or else defers to the fallback handler.
-func maybeStatic(fallback http.Handler) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		p := r.URL.Path
-		if strings.Contains(p, ".") && !strings.HasSuffix(p, "/") {
-			f := filepath.Join(*staticPath, p)
-			if _, err := os.Stat(f); err == nil {
-				http.ServeFile(w, r, f)
-				return
-			}
-		}
-		if strings.HasPrefix(p, "/lib/godoc/") {
-			f := filepath.Join(*websitePath, p[len("/lib/godoc/"):])
-			if _, err := os.Stat(f); err == nil {
-				http.ServeFile(w, r, f)
-				return
-			}
-		}
-		fallback.ServeHTTP(w, r)
-	}
-}
-
-func newServer(reload bool, config blog.Config) (http.Handler, error) {
-	mux := http.NewServeMux()
-	var h http.Handler
-	if reload {
-		h = http.HandlerFunc(reloadingBlogServer)
-	} else {
-		s, err := blog.NewServer(config)
-		if err != nil {
-			return nil, err
-		}
-		h = s
-	}
-	mux.Handle("/", maybeStatic(h))
-	return mux, nil
-}
-
-func main() {
-	flag.Parse()
-
-	if os.Getenv("GAE_ENV") == "standard" {
-		log.Println("running in App Engine Standard mode")
-		gaeMain()
-		return
-	}
-
-	config.ContentPath = *contentPath
-	config.TemplatePath = *templatePath
-	mux, err := newServer(*reload, config)
-	if err != nil {
-		log.Fatal(err)
-	}
-	ln, err := net.Listen("tcp", *httpAddr)
-	if err != nil {
-		log.Fatal(err)
-	}
-	log.Println("Listening on addr", *httpAddr)
-	log.Fatal(http.Serve(ln, mux))
-}
-
-// reloadingBlogServer is an handler that restarts the blog server on each page
-// view. Inefficient; don't enable by default. Handy when editing blog content.
-func reloadingBlogServer(w http.ResponseWriter, r *http.Request) {
-	s, err := blog.NewServer(config)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	s.ServeHTTP(w, r)
-}
diff --git a/blog/local_test.go b/blog/local_test.go
deleted file mode 100644
index b86f5c6..0000000
--- a/blog/local_test.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2018 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !appengine
-// +build !appengine
-
-package main
-
-import (
-	"net/http/httptest"
-	"os"
-	"runtime"
-	"strings"
-	"testing"
-
-	"golang.org/x/tools/blog"
-)
-
-func TestServer(t *testing.T) {
-	if runtime.GOOS == "android" {
-		t.Skip("skipping on android; can't run go tool")
-	}
-	if os.Getenv("GO_BUILDER_NAME") == "aix-ppc64" {
-		t.Skip("skipping on aix-ppc64 builder: https://golang.org/issue/33940")
-	}
-
-	oldStatic := *staticPath
-	*staticPath = "/static"
-	defer func() { *staticPath = oldStatic }()
-	mux, err := newServer(false, blog.Config{
-		TemplatePath: "./_template",
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	r := httptest.NewRequest("GET", "/", nil)
-	w := httptest.NewRecorder()
-	mux.ServeHTTP(w, r)
-	if w.Code != 200 {
-		t.Errorf("GET /: code = %d; want 200", w.Code)
-	}
-	want := "The Go Programming Language Blog"
-	if !strings.Contains(w.Body.String(), want) {
-		t.Errorf("GET /: want to find %q, got\n\n%q", want, w.Body.String())
-	}
-	if hdr := w.Header().Get("Content-Type"); hdr != "text/html; charset=utf-8" {
-		t.Errorf("GET /: want text/html content-type, got %q", hdr)
-	}
-}
diff --git a/blog/rewrite.go b/blog/redirect.go
similarity index 94%
rename from blog/rewrite.go
rename to blog/redirect.go
index ecb3397..9acb2db 100644
--- a/blog/rewrite.go
+++ b/blog/redirect.go
@@ -4,19 +4,7 @@
 
 package main
 
-import "net/http"
-
-// Register HTTP handlers that redirect old blog paths to their new locations.
-func init() {
-	for p := range urlMap {
-		dest := "/" + urlMap[p]
-		http.HandleFunc(p, func(w http.ResponseWriter, r *http.Request) {
-			http.Redirect(w, r, dest, http.StatusMovedPermanently)
-		})
-	}
-}
-
-var urlMap = map[string]string{
+var redirects = map[string]string{
 	"/2010/03/go-whats-new-in-march-2010.html":               "go-whats-new-in-march-2010",
 	"/2010/04/json-rpc-tale-of-interfaces.html":              "json-rpc-tale-of-interfaces",
 	"/2010/04/third-party-libraries-goprotobuf-and.html":     "third-party-libraries-goprotobuf-and",
diff --git a/blog/testdata/blog.txt b/blog/testdata/blog.txt
new file mode 100644
index 0000000..2121356
--- /dev/null
+++ b/blog/testdata/blog.txt
@@ -0,0 +1,6 @@
+GET /
+body contains The Go Programming Language Blog
+header Content-Type == text/html; charset=utf-8
+
+GET /2010/08/defer-panic-and-recover.html
+redirect == /defer-panic-and-recover