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    <description>云服务器选型、成本优化、安全与迁移的实操指南</description>
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    <lastBuildDate>Mon, 12 Oct 2026 00:00:00 GMT</lastBuildDate>
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      <title>AWS 私有定价怎么谈：门槛、风险与一条捷径</title>
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      <description>私有定价是 AWS 优惠体系里规模门槛最高的一层：给它的是跨服务的整体折扣，而不是单个服务的承诺折扣。两个坑要先知道——未达承诺要…</description>
      <pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS Shield Advanced 与 WAF：哪些免费、哪些仍收费</title>
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      <description>「用了 Shield Advanced 就不必单独付 WAF 费」这句话对，但有四条边界：只覆盖受保护资源、只覆盖标准功能、有请求量上限。…</description>
      <pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 节省计划怎么买：三种类型、三种付款方式、三条少有人提的限制</title>
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      <description>节省计划不是「更便宜的预留实例」。三种类型折扣深度不同，还有三条少有人提的限制：不提供容量保留、退货窗口只有 7 天、…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 账单突然变高怎么排查：定位到 7 类「一直在扣钱」的资源</title>
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      <description>账单涨了先别改任何东西。用 Cost Explorer 按服务、再按用量类型两级下钻定位真凶，再对照七类反直觉的持续计费：免费额度用尽、…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 流量费为什么这么贵：六个计费边界，以及每一条怎么省</title>
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      <description>AWS 的流量费不是一项，而是按「走了哪条路」分成好几种：出网、同区域跨可用区、跨区域，再加上路径上的 NAT 网关。…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 免费套餐新账号：200 美元抵扣金与两种计划</title>
      <link>https://rubcloud.com/blog/aws-free-tier-new-account-guide/</link>
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      <description>注册新账号能拿到 100 美元服务抵扣金，探索关键服务时最多再拿 100 美元，6 个月内最高 200 美元。但免费计划与付费计划是两条路，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 初创企业抵扣金：三个档位与一条资格门槛</title>
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      <description>AWS 初创抵扣金分三档，从 1000 美元到 20 万美元以上。资格里有一条最容易卡住人——账户必须处于付费计划，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 抵扣金和折扣不是一回事：能拿到什么</title>
      <link>https://rubcloud.com/blog/aws-credits-vs-discounts/</link>
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      <description>抵扣金是「一次性预算」，有期限、会花完、不改变单价；折扣是「长期单价」，只要符合条件就持续生效。把两者混为一谈，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 限时活动怎么领：四条资格与拿不到的原因</title>
      <link>https://rubcloud.com/blog/aws-promo-campaigns-guide/</link>
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      <description>AWS 常年有「注册并试用指定服务即领抵扣券」的限时活动，但很多人参加了却没拿到——失败点几乎全在资格条款上：必须新注册并激活、…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 定价计算器怎么用：折扣前与折扣后费率</title>
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      <description>定价计算器有两种估算类型：工作负载估算与账单估算。而「折扣前」与「折扣后」费率只适用于工作负载估算——这正是买承诺折扣前该用它…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 服务抵扣金怎么用掉：优先抵什么、怎么不浪费</title>
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      <description>抵扣金会过期，没花完就是纯损失。先把金额、到期日、适用范围三个数字记下来；分清哪些用量根本不会消耗抵扣金；…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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    <item>
      <title>AWS 折扣信息怎么找才靠谱</title>
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      <description>搜「AWS 折扣」会看到大量聚合平台，都写着「节省高达 XX%」，但很难判断省的是哪一层。官方渠道有四个，第三方平台有三种模式，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 学生与教育优惠：Educate 抵扣金怎么拿</title>
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      <description>AWS Educate 给学生和教师发抵扣金，但它用的是「入门账号」而不是普通 AWS 账号：只能用一个区域、没有 IAM 和账单面板、…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 优惠全览：从抵扣金到企业协议</title>
      <link>https://rubcloud.com/blog/aws-discount-complete-guide/</link>
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      <description>AWS 的优惠不是一张清单而是五层：抵扣金、承诺折扣、闲置算力、架构优化、企业协议。性质各异——有的改单价、有的抵金额。…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 日志费用怎么省：一个创建时就要做对的决定</title>
      <link>https://rubcloud.com/blog/aws-cloudwatch-logs-cost/</link>
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      <description>日志费用由摄取、存储、分析三块组成。而最要命的一点是：日志类在创建日志组时选，之后改不了——选了标准类再想换成低频访问类，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 支持计划怎么选：五档与隐藏的百分比</title>
      <link>https://rubcloud.com/blog/aws-support-plan-guide/</link>
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      <description>支持费是按你账单的百分比计的，所以它会随用量自动增长——账单翻倍，支持费也翻倍，但你得到的支持不会翻倍。…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>阿里云国际和腾讯云国际怎么选：折扣机制差在哪</title>
      <link>https://rubcloud.com/blog/aliyun-vs-tencent-cloud-discounts/</link>
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      <description>两家的折扣机制在同一个位置分岔：阿里云国际的节省计划承诺金额、不锁规格；腾讯云国际的预留实例锁规格。这一个差别会直接影响你「买…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>阿里云国际和腾讯云国际新账号怎么开通</title>
      <link>https://rubcloud.com/blog/china-cloud-international-signup/</link>
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      <description>两家国际站与中国站是两套完全独立的账号体系，同邮箱注册也是两个账号。而中文用户最常卡在两道门槛上：海外手机号收不到验证码、…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>GCP 免费试用：300 美元 90 天，到期会关账号</title>
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      <description>GCP 免费试用给 300 美元、有效期 90 天，期间不收费。但官方文档里有一条很容易被忽略的规则：90 天到点或额度花完，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>Azure 免费账户：200 美元 30 天与 12 个月免费服务</title>
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      <description>Azure 的免费账户有三层倒计时：200 美元额度只有 30 天，一批常用服务免费 12 个月，还有数十款始终免费。…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>Azure 和 GCP 的折扣差在哪：两种完全不同的思路</title>
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      <description>Azure 的折扣来自「外部条件」——渠道由伙伴定价，加上你已有的微软授权可以叠加；GCP 的折扣来自「内部条件」——有一层自动生效，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>多云部署值不值得：一个常被忽略的成本</title>
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      <description>多云最容易被忽略的代价不在运维，而在折扣：承诺折扣是各家自己的合同、不能跨厂商，所以用量一分散，每家的承诺规模都变小，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>多厂商账单怎么统一看：先统一分类，再谈工具</title>
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      <description>各家都是独立的账单系统，没有现成的统一视图。而多数人一上来就找工具，其实顺序反了：先把「费用分类」和「标签规范」统一，…</description>
      <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 预留实例怎么买：买多少、买几年、买错了怎么办</title>
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      <description>折扣攻略只告诉你 RI 能省三到七成，却不说买多少、买几年、买错怎么补救。按决策顺序讲清这三件事，含三条补救路径。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 优惠码是真的吗：促销抵扣金的官方入口、限制与常见骗术</title>
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      <description>搜「AWS 优惠码」多半是找折扣码。官方没有公开优惠码，但有服务抵扣金。讲清兑换入口、四条限制与常见骗术。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS Spot 竞价实例能省多少：什么场景能用，什么场景千万别用</title>
      <link>https://rubcloud.com/blog/aws-spot-instance-guide/</link>
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      <description>Spot 最高能省九成，但会被回收。讲清两分钟中断机制、四类能用与三类不能用的场景，以及混合部署怎么配。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS 中国区和国际区的免费套餐不是一回事：注册前必须分清的六件事</title>
      <link>https://rubcloud.com/blog/aws-free-tier-china-vs-global/</link>
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      <description>在 amazonaws.cn 注册的免费额度与国际区不通用，数据传出还不在免费范围。六件事帮你注册前分清，避免选错账号。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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    <item>
      <title>换成 AWS Graviton（ARM）能省多少：适合与不适合迁移的负载</title>
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      <description>AWS 官方称 Graviton 比同级 x86 性价比高 40%。讲清哪些负载迁了真省钱、哪些迁了会踩坑，以及迁移顺序。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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      <title>AWS Lightsail 和 EC2 怎么选：小业务用哪个更省钱</title>
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      <description>Lightsail 是含流量包的固定套餐，EC2 按组件计费还能叠折扣。讲清什么规模选哪个更省，以及迁移边界在哪。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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    <item>
      <title>阿里云国际折扣怎么拿：包年包月、节省计划与抢占式的取舍</title>
      <link>https://rubcloud.com/blog/aliyun-international-discount-guide/</link>
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      <description>阿里云国际没有客户等级，能改单价的只有购买方式。讲清三种官方折扣的取舍、两个注册门槛，以及常见误判。</description>
      <pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate>
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