Add FAQ section for current bazel/buck2 users

.github/styles/config/vocabularies/TraceMachina/accept.txt

@@ -52,3 +52,4 @@ proto
 quantiles
 Config
 Grafana
+execution

docs/astro.config.mjs

@@ -202,6 +202,10 @@ export default defineConfig({
               label: "What is Remote Execution?",
               link: "/faq/remote-execution",
             },
+            {
+              label: "Why do I need this if I already have Bazel or Buck2?",
+              link: "/faq/why-nativelink",
+            },
             {
               label: "What is LRE?",
               link: "/faq/lre",

docs/src/content/docs/faq/why-nativelink.mdx

@@ -0,0 +1,29 @@
+---
+title: "Why do I need this if I already have Bazel or Buck2?"
+description: "NativeLink Benefits for RBE build system users."
+pagefind: true
+---
+
+NativeLink is a NativeLink a build cache and remote execution server
+and provides the ability to connect to your Buck2 or Bazel client
+setups through small additions to your `.buckconfig` or `.bazelrc`.
+
+By integrating remote caching via the **free** hosted cloud,
+you could save **+90%** on your compute resources and
+ improve your build times.
+
+## Setup Options
+
+- **[NativeLink Cloud](/nativelink-cloud/bazel/)**:
+The hosted solution offers remote caching and execution services.
+It's free to use and can drastically improve your build speeds while
+reducing your compute costs.
+
+- **[NativeLink On-Prem](/deployment-examples/on-prem-overview/)**:
+This option enables you to deploy NativeLink within your own infrastructure,
+providing full control over your data and the flexibility to tailor the setup
+to your specific needs.
+
+If you have any questions on unique compliance requirements
+that require an on-prem setup, don't hesitate to reach out on the
+[NativeLink Slack channel](https://community.nativelink.com).