Hey there! Let's break down your questions clearly to ease your concerns:

1. 仅将Route53用作域名注册商时，能否删除自动创建的托管区？ #

Absolutely you can delete that auto-created hosted zone—no risk to your app's current availability once you've updated your domain's name servers to point to your new hosting provider. Here's the lowdown:

• When you updated your registered domain's name servers (in the Route53 "Registered Domains" section) to your new provider's, you essentially told the entire internet to look to those new servers for all DNS records for your domain. The old Route53 hosted zone is no longer involved in any actual DNS resolution at this point.
• That auto-created hosted zone only mattered when Route53 was handling your DNS hosting. Since you've moved DNS management to your new provider, this zone is just an unused, dormant resource taking up space in your AWS account.
• Quick sanity check to be 100% sure: Run nslookup -type=NS yourdomain.com in your terminal (or use a free DNS lookup tool) and confirm the returned name servers are exactly the ones from your new hosting provider. If they match, deleting the Route53 hosted zone won't touch your app's accessibility at all.

2. 如何在AWS控制台快速查看费用概览？ #

No sweat—AWS has dedicated tools for this, and it's way simpler than hunting through menus:

• First, head to the Billing and Cost Management service (just search for "Billing" in the top console search bar to jump straight to it).
• The default Dashboard page gives you a clean high-level overview: total current-month spending, spending trends over time, and a breakdown of costs by AWS service. This is perfect for a quick check-in.
• For deeper dives (like filtering by custom date ranges, specific services, or linked accounts if you're part of an AWS Organization), use the Cost Explorer tool (found in the left sidebar of the Billing service). It lets you build custom charts, compare spending across periods, and even spot unexpected cost spikes.
• Pro tip: If you want to stay on top of costs without manual checks, set up budget alerts in the Budgets section of the Billing service—you'll get notified if spending crosses a threshold you set.
• Also, pin the Billing service to your AWS console favorites (click the star icon next to it in the service list) so you can access it in one click next time.