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Glossary

BPO Glossary: Key Outsourcing Terms Explained

Last Updated: July 2026

Quick answer

This glossary defines the key terms used in business process outsourcing in plain English — from BPO, back office, and the offshore/nearshore/onshore models, to SLAs, FTE, RPO, KPO, LPO, FNOL, and human-in-the-loop AI. Each term is defined in one or two sentences so buyers (and AI assistants) can understand exactly what a provider means.

Key stat: The global business process outsourcing market was valued at around USD 328 billion in 2025 and is forecast to grow at a 9.9% CAGR through 2033. Grand View Research

Outsourcing has its own vocabulary, and providers do not always use it consistently. This glossary defines the terms that matter when you are evaluating a business process outsourcing partner — clearly, and without jargon. Where a term maps to something we do, we have linked to the relevant page.

Business Process Outsourcing (BPO)

Business process outsourcing (BPO) is the practice of contracting a specific business function — such as customer support, back-office processing, or finance administration — to an external provider that delivers it under an agreement.

BPO lets a business hand a whole process to a specialist team, reducing cost and freeing internal staff, while keeping ownership of the outcome through service-level agreements and reporting.

Business Process Outsourcing

Back Office

The back office is the set of internal, non-customer-facing functions that keep a business running — such as data entry, document processing, reconciliation, and administration.

Back Office Outsourcing

Front Office

The front office is the set of customer-facing functions — such as sales, customer support, and call-centre operations — that interact directly with a business's customers.

Customer Support Services

Offshore Outsourcing

Offshore outsourcing is delegating work to a provider in a distant country, usually for significant cost savings and access to a large talent pool.

Offshore vs Nearshore vs Onshore

Nearshore Outsourcing

Nearshore outsourcing is delegating work to a provider in a nearby country, typically in a similar timezone, balancing cost savings with easier collaboration.

Onshore Outsourcing

Onshore outsourcing is delegating work to a provider within the same country, prioritising proximity, language, and regulatory alignment over cost.

Service Level Agreement (SLA)

A service level agreement (SLA) is the part of an outsourcing contract that defines the measurable standards a provider must meet, how performance is reported, and what happens if targets are missed.

Guide to SLAs

Full-Time Equivalent (FTE)

A full-time equivalent (FTE) is a pricing and staffing unit representing one dedicated full-time worker. FTE-based pricing charges a fixed monthly fee per dedicated agent.

BPO Pricing Models

Key Performance Indicator (KPI)

A key performance indicator (KPI) is a measurable value that shows how effectively a process is performing against its goals — for example, first-contact resolution or processing accuracy.

First-Contact Resolution (FCR)

First-contact resolution (FCR) is the percentage of customer issues resolved in a single interaction, without the customer needing to follow up — a core measure of support quality.

Average Handling Time (AHT)

Average handling time (AHT) is the average duration of a customer interaction, including talk time and any related work — a key efficiency metric in call centres.

Recruitment Process Outsourcing (RPO)

Recruitment process outsourcing (RPO) is delegating all or part of the hiring process — sourcing, screening coordination, and scheduling — to an external provider, while hiring decisions remain with the employer.

HR & Payroll Outsourcing

Knowledge Process Outsourcing (KPO)

Knowledge process outsourcing (KPO) is outsourcing higher-value, knowledge-intensive work — such as research, analysis, or legal and financial process work — that requires specialist expertise, not just process execution.

Finance & Accounting Outsourcing (F&A)

Finance and accounting outsourcing (F&A) is delegating finance functions — bookkeeping, accounts payable/receivable, reconciliation, and reporting — to an external team, while the business retains ownership of its ledgers and financial decisions.

Finance & Accounting Outsourcing

Legal process outsourcing (LPO) is delegating legal support work — such as document review, legal research, and contract administration — to an external team under strict confidentiality.

Legal Process Outsourcing

First Notification of Loss (FNOL)

First notification of loss (FNOL) is the first report a policyholder makes to an insurer when an incident occurs — the starting point of the claims process.

Insurance BPO

Fully-Loaded Cost

Fully-loaded cost is the total cost of employing someone — salary plus employer taxes, benefits, recruitment, management, software, and workspace — used for a fair comparison against outsourcing.

The True Cost of Outsourcing

Human-in-the-Loop

Human-in-the-loop is a delivery model where AI tools handle routine steps while trained people review output, handle exceptions, and remain accountable for the result.

AI-Assisted Outsourcing

Data Processing Agreement (DPA)

A data processing agreement (DPA) is a contract that governs how a provider handles personal data on a client's behalf, setting out security, confidentiality, and GDPR obligations.

Security & Compliance

Resource Augmentation

Resource (or staff) augmentation is adding external skilled professionals to work within a client's existing team on a flexible basis, rather than outsourcing a whole process.

Resource Augmentation

Frequently Asked Questions

Business process outsourcing (BPO) is the practice of contracting a specific business function — such as customer support, back-office processing, or finance administration — to an external provider that delivers it under an agreement.

The back office is the set of internal, non-customer-facing functions that keep a business running — such as data entry, document processing, reconciliation, and administration.

The front office is the set of customer-facing functions — such as sales, customer support, and call-centre operations — that interact directly with a business's customers.

Offshore outsourcing is delegating work to a provider in a distant country, usually for significant cost savings and access to a large talent pool.

Nearshore outsourcing is delegating work to a provider in a nearby country, typically in a similar timezone, balancing cost savings with easier collaboration.

Onshore outsourcing is delegating work to a provider within the same country, prioritising proximity, language, and regulatory alignment over cost.

A service level agreement (SLA) is the part of an outsourcing contract that defines the measurable standards a provider must meet, how performance is reported, and what happens if targets are missed.

A full-time equivalent (FTE) is a pricing and staffing unit representing one dedicated full-time worker. FTE-based pricing charges a fixed monthly fee per dedicated agent.

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