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What are the different types of interpretation?
Most global companies retain professional interpretation services to grow their business. When forging new partnerships, managing logistics, and providing fulfillment, interpretation can mean the difference between success and failure. I've broken down the different types of interpretation services available, so you can identify which one your team actually needs.
What is interpretation, and why is it needed?
Let's start with a quick definition. Interpretation is the conversion of spoken or signed words from one language to another, and its purpose is simple: it lets people who don't share a language communicate directly and in real time, whether that's closing an international business deal, running a multilingual conference, or holding a meeting with an overseas partner, without losing meaning, tone, or nuance along the way.
Interpretation is needed wherever a misunderstanding carries real cost: business negotiations, legal proceedings, medical appointments, and international conferences. Given how many business needs it meets, specialization within the industry has produced several distinct types, each suited to a different setting. Tomedes is a corporate member of the American Translators Association (ATA), the leading professional body for the translation and interpreting industry in the U.S.
What are the main types of interpretation?
The main types of interpretation are simultaneous, consecutive, whispered, relay, liaison, escort or travel, and over-the-phone interpretation, seven in total, each suited to a different setting. Professional interpretation can help close an international deal, transmit information to a diverse audience, and avoid a culture clash that could damage your brand. Here's each one in detail.
| Type | Best for | Setting |
|---|---|---|
| Simultaneous | Large audiences, real-time delivery | Conferences, in booths |
| Consecutive | Two-way meetings | In person, phone, or video |
| Whispered | 1-2 listeners in a room | Small meetings |
| Relay | Rare language pairings | Multilingual conferences |
| Liaison | Two-way business conversations | Site visits, negotiations |
| Escort | Multi-venue accompaniment | Business trips, events |
| Off-site (video) | Routine, lower-stakes conversations | Remote, video or phone |
Simultaneous Interpretation
What is simultaneous interpreting? It involves delivering a speaker's words in another language in real time, and I'd argue it's the most demanding type of interpretation to provide. A classic example occurs at an international conference: the speaker takes the stage and speaks in their native tongue, while interpreters in booths around the room translate so the audience can listen in different languages.
The live aspect is what makes it useful, the speaker doesn't have to modify the flow of their speech at all. A courteous speaker who has used a simultaneous interpreting service before will slow their pace slightly. These interpreters must be expert linguists and quick thinkers; the work demands so much brainpower that simultaneous interpreters typically work in pairs, sitting in the booth for the entire speech in shifts of 20 to 25 minutes.
Consecutive Interpretation
What is consecutive interpretation? In consecutive interpretation, the interpreter translates every sentence or two from the speaker, who pauses to give the interpreter time to deliver a translation. In business, companies use consecutive interpreting for meetings, from a conversation between two individuals to discussions between larger groups.
This type of interpreting works well in person, on the phone, and via video conferencing. Tomedes' consecutive interpreting service covers all three formats, matched to the specialist knowledge each engagement requires. Because consecutive interpreters work from memory during the pause, note-taking technique is what keeps long, complex messages accurate.
Whispered Interpretation
Borrowing the French word for whispering, chuchotage interpreting sees less use than simultaneous or consecutive interpreting. The interpreter works with one or two listeners in a room, translating live by whispering in their ears as the speaker talks. This shows up in meetings where only one or two attendees speak another language.
Relay Interpretation
Relay interpretation uses multiple interpreters during either simultaneous or consecutive interpretation. One interpreter translates the speaker's words, and a second interpreter translates the first interpreter's translation.
Simultaneous relay
Works well at conferences with multiple target languages, or when an interpreter for a particular pairing isn't available. In a conference delivered in German with delegates who speak English, Spanish, Mandarin, and Portuguese, the first interpreter translates from German to English, and the others translate from English into the remaining languages.
Consecutive relay
Common at meetings where attendees speak various minority languages. Interpreters translate each participant's words into one shared language, such as English, then relay the message to individual listeners in their own language during pauses.
Liaison Interpretation
A liaison interpreter translates for two individuals speaking in turns, enabling a fluid conversation. Picture a business executive visiting a foreign company's premises: the liaison interpreter accompanies them for the entire visit, translating as required. It's a form of consecutive interpretation.
Escort or Travel Interpretation
Another form of consecutive interpretation, escort interpreting shares characteristics with liaison interpreting, except the interpreter accompanies the client to several venues, not just one. That might mean business trips, dinners, sightseeing, or cultural events.
Over-the-Phone Interpretation (OPI)
Over-the-phone interpretation (OPI) occurs entirely by telephone, with no video or in-person component. This type saw a significant spike in demand during the COVID-19 pandemic, when many businesses needed a fast, no-setup way to bridge language gaps remotely.
Over-the-phone interpreters must listen intently, since they don't receive the non-verbal cues of a face-to-face or video conversation. This audio-only format works for simple, low-stakes conversations, but it drops the visual context that legal, medical, and conference settings often depend on.
That gap is why most businesses evaluating remote interpretation today choose video-based options instead. Tomedes delivers this through off-site video interpretation, which keeps the flexibility of a remote session while preserving the visual cues phone-only interpretation misses, and for encounters where an interpreter needs to be physically present, on-site interpretation remains the standard.
How to get the best interpretation service
How do you get the best type of interpretation for your needs? Consider the basics: what can interpretation services achieve for your company, and when?
If you plan to host an event where you only need one-way translation, like a conference, simultaneous interpretation is the right call. If you want a two-way conversation with speakers of other languages, book a consecutive interpretation service instead.
Find the right interpreter
Finding the right type of interpreter takes time and effort during the investigation phase. Don't hire the first interpretation company you find on Google without doing due diligence, unless you already know its reputation.
Your interpreter speaks for your business, so confidence in their language credentials and professionalism matters. Start by looking for interpretation services or freelance interpreters with strong reviews who work with your specific language pairing. Search for an interpreter who specializes in your business niche, whether that's technical language, medical products, or legal hearings.
Freelance interpreting vs. interpretation companies
Both options have their merits. Freelancers can be more cost-effective for simple, one-off assignments. Professional interpreting companies offer more flexibility, reliable results, backup coverage, and vetted specialists for higher-stakes engagements.
If your agency interpreter comes down with a stomach bug the night before your big event, your language service provider should find a quick replacement. If your freelancer gets sick, finding a replacement in time may prove impossible.
Final thoughts
The language services you select speak volumes about your business. In my experience, hiring skilled interpreters who ensure meetings run smoothly sends a message to your counterparts that you do things properly, and your interpreter enables you to reach out to the world with your ideas, products, and services.
FAQs
Q: What are the main types of interpretation?
A: The main types of interpretation are simultaneous, consecutive, whispered, relay, liaison, escort or travel, and over-the-phone interpretation, seven in total. Each is suited to a different setting, from large conferences and courtrooms to two-way business meetings, site visits, and remote calls.
Q: What is the purpose of interpretation?
A: Interpretation lets people who don't share a language communicate directly and in real time, whether that's closing an international business deal, running a multilingual conference, or holding a meeting with an overseas partner, without losing meaning, tone, or nuance along the way.
Q: What are examples of interpretation?
A: Examples include a conference interpreter translating a keynote speech from a soundproof booth, a liaison interpreter accompanying an executive on a factory visit, and an off-site video interpreter connecting a healthcare provider with a patient remotely. Each example uses a different type of interpretation suited to that setting.
Q: Why is interpretation needed?
A: Interpretation is needed whenever people who speak different languages need to communicate directly, in business negotiations, legal proceedings, medical appointments, and international conferences, where a misunderstanding could cost a deal, a case, or a diagnosis. The right type of interpreter closes that gap without slowing the conversation down.
Written by Ofer Tirosh
Connect on LinkedInOfer founded Tomedes in 2007 and now leads the company's push to combine two decades of human translation expertise with AI. He writes about where the language industry is actually heading and the shifts nobody's ready for, the bets that paid off, and the ones that didn't.
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