add intro

Author: matthewlouisbrockman

docs/sandbox/auto-resume.mdx

@@ -3,7 +3,9 @@ title: "AutoResume"
 sidebarTitle: AutoResume
 ---
 
-`AutoResume` builds on [sandbox persistence](/docs/sandbox/persistence): a sandbox pauses at timeout and is then resumed from that paused state.
+Managing sandbox lifecycle manually can get painful. Instead of handling pause/resume orchestration yourself, your sandbox should come back to life when you need it.
+
+`AutoResume` builds on [sandbox persistence](/docs/sandbox/persistence): a sandbox pauses at timeout and then resumes from that paused state when it receives traffic.
 Configure `AutoResume` through the `lifecycle` object when creating a sandbox.
 
 ## Configure lifecycle on create