GTM engineering glossary
60 terms GTM engineers use every day, from waterfall enrichment to DMARC, each defined in a sentence or two. Where there is more to learn, the term links to a full guide on the GTM engineering blog.
A
Account-based marketing
Account-based marketing (ABM) targets a defined list of high-value accounts with coordinated, tailored outreach across channels, instead of generating leads broadly.
AI agent
An AI agent is a language model that can take actions, such as searching the web, calling APIs or writing to a CRM, to complete a goal over several steps. In GTM engineering, agents research accounts, write personalised copy and maintain workflows.
API
An application programming interface (API) lets software exchange data with another system in a structured way. Most GTM engineering work is connecting tools through their APIs, either directly or through Clay, n8n or Make.
B
Bounce rate
Bounce rate is the share of emails that fail to deliver. High bounce rates damage sender reputation, which is why lists are verified before sending.
Buyer persona
A buyer persona describes the people inside your ICP accounts who buy or influence the purchase: their role, seniority, goals and objections. Personas decide who you contact and what you say.
Buying signal
A buying signal is an observable event that suggests an account may be ready to buy, such as a new leader in a relevant role, a hiring spree, a funding round, a tech change or repeat visits to your pricing page. Learn more about Buying signal
C
Catch-all domain
A catch-all domain accepts mail for any address, so verification tools cannot confirm whether a specific address exists. These addresses are riskier to send to and are often handled separately.
Champion
A champion is a person inside a target or customer account who actively supports buying your product. Tracking champions who change jobs is a common signal-based play.
Claude Code
Claude Code is Anthropic's agentic coding tool. GTM engineers use it to write and run scripts, connect APIs and build automations from plain-language instructions. Learn more about Claude Code
Clay
Clay is a GTM data platform that combines spreadsheet-style tables, more than a hundred data providers, AI research agents and integrations, so you can find, enrich and qualify accounts and push them to a CRM or sequencer. Learn more about Clay
Claygent
Claygent is Clay's AI research agent. It browses the web to answer a question about each row in a table, such as whether a company sells to enterprises, and returns the answer as a column you can filter on. Learn more about Claygent
Cold email
Cold email is a first email to someone who has had no previous contact with you. It works when it is relevant, personal and sent from infrastructure that keeps it out of spam. Learn more about Cold email
CRM
A customer relationship management (CRM) system stores your accounts, contacts, deals and activity. In a GTM engineering stack it is the system of record that enrichment, signals and sequencers write back to.
CRM hygiene
CRM hygiene is keeping records accurate, deduplicated and complete, with consistent fields and owners. Automation only works on clean data, so hygiene is usually a GTM engineer's first project.
D
Data credits
Data credits are the units many GTM tools charge in. Each lookup, enrichment or AI action consumes a set number of credits, so the real cost of a tool depends on how many credits your workflow uses per record. Learn more about Data credits
Data orchestration
Data orchestration coordinates how data moves between tools: which source fills which field, in what order, and where the result is written. Clay is the most common orchestration layer in GTM engineering. Learn more about Data orchestration
Deduplication
Deduplication finds and merges records that refer to the same company or person, usually by matching on domain, email or a combination of fields.
Deliverability
Deliverability is the share of your emails that reach the inbox rather than spam. It depends on domain and inbox setup, authentication, sending volume, list quality and how recipients engage. Learn more about Deliverability
DKIM
DomainKeys Identified Mail (DKIM) adds a cryptographic signature to your emails so receiving servers can confirm they came from your domain and were not altered. It is a baseline requirement for inbox placement. Learn more about DKIM
DMARC
Domain-based Message Authentication, Reporting and Conformance (DMARC) tells receiving servers what to do when an email fails SPF or DKIM checks, and sends you reports. Gmail and Yahoo require a DMARC record for bulk senders. Learn more about DMARC
E
Email verification
Email verification checks whether an address exists and can receive mail before you send to it, which keeps bounce rates low and protects your domains.
Email warm-up
Email warm-up gradually raises a new inbox's sending volume while generating positive engagement, so mailbox providers learn to trust it before you send cold email from it. Learn more about Email warm-up
Enrichment
Enrichment is adding missing data to a record, such as a contact's email, phone, job title or a company's size and tech stack, by querying one or more data providers. It turns a name and a domain into a usable lead. Learn more about Enrichment
F
Firmographics
Firmographics are company-level attributes such as industry, employee count, revenue, location, founding year and funding. They are the base layer of account data used to filter and score a target list.
G
GDPR
The General Data Protection Regulation (GDPR) governs how personal data of people in the EU is processed, and the UK GDPR does the same in the UK. B2B outreach usually relies on legitimate interests, with clear opt-outs.
Go-to-market (GTM)
Go-to-market is how a company takes a product to customers: who it sells to, through which channels, with what message and process. In GTM engineering, GTM always means go-to-market, not Google Tag Manager.
GTM engineer
A GTM engineer designs and builds the automated systems a revenue team runs on: finding accounts, enriching data, tracking buying signals, sending outreach and keeping the CRM clean. The role combines sales knowledge with no-code, API and AI skills. Learn more about GTM engineer
GTM engineering
Go-to-market (GTM) engineering is the practice of building the technical systems behind sales and marketing: data, enrichment, signals, outbound sequences and CRM automation, built with tools like Clay, APIs and AI rather than run by hand. Learn more about GTM engineering
H
HTTP API column
An HTTP API column in Clay calls any external API for each row, using values from the table. It lets you connect tools that have no native Clay integration.
I
ICP
An ideal customer profile (ICP) describes the companies most likely to buy and succeed with your product, using firmographics such as industry, size, location, tech stack and growth. Outbound and enrichment rules are built around it.
Inbox rotation
Inbox rotation spreads a campaign's sending across several inboxes so each one stays under a safe daily volume. Most cold email tools manage rotation automatically. Learn more about Inbox rotation
Intent data
Intent data shows which companies are researching topics related to your product, based on their content consumption across the web or on your own site. It is one type of buying signal, usually at company level. Learn more about Intent data
J
Job change signal
A job change signal fires when a past customer, champion or target persona starts a new role. People who already know your product often bring it to their next company, which makes this one of the strongest signals. Learn more about Job change signal
L
Lead routing
Lead routing assigns each new lead to the right owner automatically, based on territory, segment, account ownership or round-robin rules, so nobody waits for a reply.
Lead scoring
Lead scoring ranks leads or accounts by fit and intent, using rules or a model, so the team works the best ones first. Fit comes from firmographics; intent comes from signals and engagement.
LinkedIn automation
LinkedIn automation tools send connection requests, messages and profile visits on a schedule across one or more accounts. LinkedIn's terms restrict automation, so safety limits matter. Learn more about LinkedIn automation
M
Match rate
Match rate is the share of records for which a data provider returns a result, such as a valid email. Comparing match rates on your own list is the most reliable way to judge a provider.
MCP
The Model Context Protocol (MCP) is an open standard that lets AI assistants such as Claude connect to external tools and data sources. GTM engineers use MCP servers to give AI agents access to CRMs, data providers and other systems. Learn more about MCP
Meeting booked rate
Meeting booked rate is the share of prospects contacted who book a meeting. It connects outbound activity to pipeline better than open or reply rates.
Multichannel outreach
Multichannel outreach combines email, LinkedIn, calls and sometimes ads in one sequence, so prospects see your message in more than one place.
O
Open rate
Open rate is the share of recipients who open an email. Privacy features now make open tracking unreliable, and tracking pixels can hurt cold email deliverability, so many teams no longer track it.
P
PECR
The Privacy and Electronic Communications Regulations (PECR) set UK rules for electronic marketing. Business-to-business emails to corporate addresses have looser rules than those to individuals, but you must identify yourself and offer an opt-out.
Personalisation at scale
Personalisation at scale means writing a relevant, specific line for each prospect automatically, using enrichment data, signals and AI, rather than a generic template with a first-name merge field.
Pipeline
Pipeline is the total value of open sales opportunities. GTM engineering systems are usually judged on how much qualified pipeline they create and how efficiently.
R
RevOps
Revenue operations (RevOps) aligns sales, marketing and customer success around shared processes, data and reporting. It overlaps with GTM engineering, but RevOps leans towards process and reporting while GTM engineering leans towards building automated pipeline systems. Learn more about RevOps
S
Secondary domain
A secondary domain is a separate domain, usually close to your main brand, used only for cold email. If it gets flagged as spam, your main domain and day-to-day email stay safe. Learn more about Secondary domain
Self-hosting
Self-hosting means running software on your own server instead of the vendor's cloud. n8n's community edition can be self-hosted, which gives full control of data and removes per-execution fees. Learn more about Self-hosting
Sequence
A sequence is a pre-planned series of outreach steps, such as emails, LinkedIn touches and calls, sent over days or weeks until the prospect replies or the steps run out.
Signal-based outbound
Signal-based outbound means contacting accounts because something just happened that suggests they need you, such as hiring, funding, a job change or a website visit, rather than emailing a static list. Learn more about Signal-based outbound
Spam rate
Spam rate is the share of recipients who mark your email as spam. Google asks bulk senders to keep it under 0.3% in Postmaster Tools, and lower is safer. Learn more about Spam rate
Spec-driven development
Spec-driven development means writing a precise specification of a system before building it, then building and reviewing against that spec. In GTM engineering it helps AI agents build workflows correctly the first time. Learn more about Spec-driven development
SPF
Sender Policy Framework (SPF) is a DNS record that lists which servers may send email for your domain. Gmail and Yahoo require it for bulk senders, and missing SPF is a common reason cold email lands in spam. Learn more about SPF
T
TAM
Total addressable market (TAM) is every account that fits your ICP. In GTM engineering, building the TAM list is usually the first job: a complete, deduplicated list of target companies you can enrich and prioritise.
Tech stack
A tech stack is the set of tools a team uses together. A GTM engineering stack typically covers data, enrichment, signals, sequencing, deliverability, LinkedIn, CRM and automation. Learn more about Tech stack
Technographics
Technographics describe the technologies a company uses, such as its CRM, website platform or analytics tools. They help target companies that use, or have just adopted, tools related to your product.
W
Waterfall enrichment
Waterfall enrichment queries several data providers in sequence for the same field and stops at the first valid result. Because no provider covers everyone, a waterfall raises match rates while you pay only for the lookups that run. Learn more about Waterfall enrichment
Webhook
A webhook is an automatic HTTP message one system sends to another when something happens, such as a form fill or a reply. Webhooks let GTM tools trigger workflows in real time instead of on a schedule.
Website visitor identification
Website visitor identification matches anonymous visits to the companies, and sometimes the people, behind them. Rules on consent and person-level identification differ by country, especially in the UK and EU.
Workflow automation
Workflow automation runs a series of steps across tools when a trigger fires, such as enriching a new lead and assigning it. n8n, Make and Zapier are common workflow tools. Learn more about Workflow automation
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