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---
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title: Pay-as-you-go
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type: concept
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tags: [Cloud, Cost-Optimization, Business-Model]
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sources: [The-Myths-and-Misconceptions-About-Cloud-Computing-LinkedIn.md]
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last_updated: 2025-03-02
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---
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## Definition
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按需付费(Pay-as-you-go)是一种基于实际使用量计费的商业模式,用户根据资源消耗而非固定订阅支付费用。
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## Core Features
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- 弹性计费:根据实际使用量收费
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- 无需大额前期投资:降低资本支出
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- 资源弹性扩展:根据业务需求动态调整
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- 成本透明:按使用量精确计费
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## Cost Optimization Strategies
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- 预留实例(Reserved Instances):长期使用可享折扣
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- 自动扩展(Auto-scaling):根据负载自动调整资源
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- 无服务器计算(Serverless Computing):仅按实际计算时间计费
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## Key Claims
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- 云计算采用按需付费模式,允许企业按需扩展资源
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- 成本优化策略如预留实例、自动扩展和无服务器计算有助于降低费用
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- 消除本地硬件采购、维护和升级需求通常可带来显著成本节省
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## Connections
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- [[CAPEX-to-OPEX]] ← implements ← [[Pay-as-you-go]]:按需付费是 CAPEX 到 OPEX 转型的实现方式
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- [[Auto-scaling]] ← supports ← [[Pay-as-you-go]]:自动扩展优化按需付费成本
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- [[Serverless-Computing]] ← extends ← [[Pay-as-you-go]]:无服务器是最细粒度的按需付费
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