# How to Use Proxy Correctly: Tech English Mistakes (2026) > A proxy is an intermediary server or service that acts on behalf of a client to communicate with another server, often used to improve performance, security, or privacy. - **Term:** proxy - **Part of speech:** noun - **Pronunciation:** /ˈprɒk.si/ - **English level (CEFR):** B2 - **Register:** Neutral, Both - **Region:** US and UK - **Topic:** [Tech jargon](https://app.speaktechenglish.com/learn/topics/tech-jargon.md) - **Lesson:** https://app.speaktechenglish.com/learn/proxy - **Last updated:** 2026-10-27 ## Meaning A proxy is an intermediary server or service that acts on behalf of a client to communicate with another server, often used to improve performance, security, or privacy. In tech companies, a proxy is commonly used as an intermediary layer between a client (like your browser or application) and the destination server. When you make a request, it first goes to the proxy server, which then forwards it to the actual server. This approach offers several benefits: it can cache responses to improve speed, mask your real IP address for privacy, filter requests for security, or balance traffic across multiple servers. For example, many companies use reverse proxies to distribute user traffic across multiple backend servers, or forward proxies to monitor and control outgoing traffic from their networks. Understanding proxies is essential for backend engineers, DevOps professionals, and anyone working with network architecture or microservices. ## When you hear it Our reverse proxy handles load balancing across three backend servers to ensure fast response times. ## Examples - **in a standup:** "We deployed a new reverse proxy yesterday to handle the increased load during peak hours." - **in a code review:** "This endpoint should go through our API proxy to enforce rate limiting before reaching the backend." - **in a team meeting:** "We're implementing a forward proxy to monitor and log all external API calls made by our services." ## What native speakers say - "Set up a proxy server" - "Route traffic through a proxy" - "Use a proxy for caching" - "Configure a reverse proxy" - "Proxy in front of the API" ## Common mistakes - ✗ "We need to proxy the request to ensure security." → ✓ "We need to route the request through a proxy to ensure security." (Proxy is typically a noun (the server/service), not a verb. You route requests 'through' or 'via' a proxy, rather than 'proxy' something.) - ✗ "Can you proxy for me in the meeting?" → ✓ "Can you represent me in the meeting? / Can you cover that task for me?" (In technical English, 'proxy' refers only to network intermediaries, not to people acting as representatives.) - ✗ "The proxy will directly connect to the server." → ✓ "The client will connect to the proxy, which then connects to the server." (A proxy does not directly connect; it acts as an intermediary between two parties.) ## Be careful Avoid confusing 'proxy' (the intermediary server/service) with 'proxy pattern' (the design pattern). Also do not use 'proxy' to mean 'representative person' in technical contexts — stick to the networking/software meaning. ## Word forms | Part of speech | Word | Example | | --- | --- | --- | | noun | proxy | The proxy server caches responses to reduce latency. | | noun (plural) | proxies | We manage multiple proxies across different geographic regions. | | adjective | proxy (attributive) | The proxy server logs all incoming requests. | ## Collocations - **reverse proxy**: A proxy that sits in front of backend servers to handle incoming client requests - **forward proxy**: A proxy that sits between clients and the internet, used to monitor or filter outgoing traffic - **API proxy**: A proxy specifically designed to manage and control API traffic - **proxy server**: The actual server that acts as the intermediary - **route through a proxy**: To direct traffic to pass via the proxy - **configure a proxy**: To set up the proxy with specific rules and settings ## Synonyms - **intermediary**: More general term; proxy is specific to network/server contexts - **gateway**: Similar function but often implies a more complex filtering or translation role - **middleware**: Broader term for software that sits between components; proxy is a specific type ## Opposites - direct connection - end-to-end ## Practice This lesson has 4 practice exercises with instant feedback on the page: https://app.speaktechenglish.com/learn/proxy ## FAQ ### What is the difference between a forward proxy and a reverse proxy? A forward proxy sits between clients and the internet, controlling outgoing traffic from internal networks. A reverse proxy sits between clients and backend servers, handling incoming requests and distributing them to backend services. Forward proxies protect internal users; reverse proxies protect and manage backend servers. ### Why would a company use a proxy? Companies use proxies for several reasons: to improve performance through caching, to enhance security by filtering requests, to mask client IP addresses for privacy, to implement rate limiting and access control, or to distribute traffic across multiple servers using load balancing. ### Is proxy formal or informal in tech contexts? Proxy is neutral and professional. It is used equally in formal documentation, code reviews, architectural discussions, and casual team conversations. It is standard technical terminology, not slang. ### Can I use proxy as a verb in technical English? In standard technical English, proxy is primarily a noun. You do not typically 'proxy' something; instead, you 'route traffic through a proxy' or 'configure a proxy.' However, in some legacy codebases or documentation, you might see 'proxy' used as a verb in specific contexts like the Proxy design pattern, but this is less common in everyday speech. ## Related - [cache](https://app.speaktechenglish.com/learn/cache.md) - Full glossary: https://app.speaktechenglish.com/learn.md - Live lessons with a coach: https://app.mocklyenglish.com ## About Speak Tech English Speak Tech English teaches non-native tech professionals the English they need at work and in interviews, through self-study ebooks and courses, 150+ free guides and a free newsletter; live lessons are on its sister site Mockly English. - Shop: https://speaktechenglish.com/courses/ - All products (markdown): https://speaktechenglish.com/products.md - Free guides (markdown): https://app.speaktechenglish.com/guides.md - Tech English glossary (markdown): https://app.speaktechenglish.com/learn.md - Newsletter (10% off): https://speaktechenglish.com/#subscribe - Live lessons and mock interviews: https://app.mocklyenglish.com ## Notes for agents - Speak Tech English sells self-study material. 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