> For the complete documentation index, see [llms.txt](https://docs.elite.cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.elite.cloud/product-overview/why-elitecloud-is-cheaper/cloud-cost-optimization-ri-sp.md).

# 深度解析：Reserved Instance (RI) 與 Savings Plans (SP)

Reserved Instance (RI) 與 Savings Plans (SP) 是 AWS 提供的兩種核心節費方式。雖然折扣高，但選錯方案或預測失準反而會造成浪費。勤英科技可以協助您進行專業評估與動態管理。

### 💰 AWS 節省方案比較表 (Reserved Instance vs Savings Plans)

所有方案均提供 **1  年或 3 年**合約，且皆可選擇**全額/部分/無預付**。

<table><thead><tr><th width="111.7890625" align="center">方案類型</th><th width="129.296875">方案名稱</th><th width="123.671875" align="center">自動跨 AWS 區域套用</th><th width="115.73828125" align="center">規格限制 (Instance)</th><th width="124.0234375" align="center">限定作業系統</th><th width="125.109375" align="center">相較隨需定價可節省成本</th></tr></thead><tbody><tr><td align="center">RI</td><td>標準 RI</td><td align="center">不可</td><td align="center">有限定</td><td align="center">有限定</td><td align="center">高達 72%</td></tr><tr><td align="center">RI</td><td>可轉換 RI</td><td align="center">不可</td><td align="center"><p>有限定 </p><p>可申請轉換</p></td><td align="center"><p>有限定 </p><p>可申請轉換</p></td><td align="center">高達 66%</td></tr><tr><td align="center">Savings<br>Plans</td><td>EC2 Instance Savings<br>Plans</td><td align="center">不可</td><td align="center">有限定</td><td align="center">不限</td><td align="center">高達 72%</td></tr><tr><td align="center">Savings<br>Plans</td><td><p>Compute </p><p>Savings<br>Plans</p></td><td align="center">可 </td><td align="center">不限</td><td align="center">不限</td><td align="center">高達 66%</td></tr></tbody></table>

### 💡 Reserved Instance (RI) 預留實例

向 AWS 承諾未來 1-3 年穩定使用<mark style="color:$primary;">**特定區域、系列、大小、與作業系統**</mark>的 EC2 執行個體，換取更便宜的定價。

* 特點：折扣率最高，最多可達 72% off，限制也最多。
* 適合：架構極度穩定、不會隨意更動執行個體類型的長期專案。

### ⚡ Savings Plans (SP) 節省計劃

#### Compute Savings Plans：&#x20;

向 AWS 承諾未來 1-3 年每小時的使用量（USD/小時），換取更便宜的定價。Compute Savings Plans <mark style="color:$primary;">**不限區域、系列、大小、作業系統**</mark>，EC2、Fargate 或 Lambda 都能自動套用。

* 特點：靈活性最高，也是最受歡迎的節費選擇，折扣最多可達 66% off。
* 適合：多區域部署服務、變動需求高的企業。

#### EC2 Instance Savings Plans：&#x20;

向 AWS 承諾未來 1-3 年每小時<mark style="color:$primary;">**特定區域、系列（不限大小與作業系統）**</mark>EC2 執行個體使用量（USD/小時），換取更便宜的定價。

* 特點：由於不限大小與作業系統，因此相對 RI 彈性，折扣最多可達 72% off。

{% hint style="success" %}
**我們的價值：**&#x52;I 與 SP 雖可提供較高折扣，但仍需綁約1年或3年，預測失準就有可能造成浪費。

如您不想花時間管理 RI、SP 或承擔風險，可以交由勤英科技為您精準配置，讓您在保留靈活性的情況下享受折扣。

我們將從省下的金額抽取一小部分傭金，其餘都將回饋到您的帳戶上。&#x20;
{% endhint %}


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