Digital Marketing Acronyms: The Practical Glossary

A digital marketing acronym is shorthand for one of three things: a metric, a channel, or a piece of technology. CPM is what you pay for a thousand ad impressions, CTR is the share of people who clicked, ROAS is revenue divided by ad spend — and once you know which of the three a letter-string belongs to, most media plans stop being intimidating.

This page is the working version of that glossary. Every important acronym gets a plain-English definition, the formula where one exists, a worked example in rupees, and the mistake people usually make with it.

The nine acronyms that decide your budget

If you learn nothing else, learn these. They are the ones that appear in every performance review, and they are all derived from each other — which is why fixing one usually moves three.

Acronym	Stands for	Formula	What it answers
CPM	Cost per mille (Latin for thousand)	(Spend ÷ Impressions) × 1,000	What does it cost to be seen?
CTR	Click-through rate	Clicks ÷ Impressions	Is the creative earning attention?
CPC	Cost per click	Spend ÷ Clicks	What does one visitor cost?
CVR	Conversion rate	Conversions ÷ Clicks	Is the landing page doing its job?
CPA	Cost per acquisition	Spend ÷ Conversions	What does one order or signup cost?
CPL	Cost per lead	Spend ÷ Leads	What does one enquiry cost?
AOV	Average order value	Revenue ÷ Orders	How much is each sale worth?
ROAS	Return on ad spend	Revenue ÷ Ad spend	Did the media pay for itself?
CAC	Customer acquisition cost	Acquisition spend ÷ New customers	What does a new customer cost?

Notice the chain: CPM and CTR together produce CPC. CPC and CVR together produce CPA. CPA and AOV together produce ROAS. A campaign almost never has a “ROAS problem” — it has a CTR problem or a CVR problem wearing a ROAS costume.

One campaign, every number worked out

Here is a single month of Meta ads for a mid-size Indian direct-to-consumer (D2C) brand. Follow the arithmetic and the whole vocabulary lands at once.

• Spend: ₹2,00,000
• Impressions: 10,00,000
• Clicks: 15,000
• Orders: 300, average order value ₹1,400
• Gross margin after cost of goods and shipping: 55%

CPM = (2,00,000 ÷ 10,00,000) × 1,000 = ₹200 per thousand impressions.

CTR = 15,000 ÷ 10,00,000 = 1.5%. CPC = 2,00,000 ÷ 15,000 = ₹13.33.

CVR = 300 ÷ 15,000 = 2%. CPA = 2,00,000 ÷ 300 = ₹666.67.

Revenue = 300 × ₹1,400 = ₹4,20,000. ROAS = 4,20,000 ÷ 2,00,000 = 2.1.

Now the part most dashboards hide. Gross profit = ₹4,20,000 × 55% = ₹2,31,000. Subtract the ₹2,00,000 of media and you are left with ₹31,000 of contribution. That is a real return of about 15.5% on the media — positive, but nothing like the “110% return” a ROAS of 2.1 sounds like.

Break-even ROAS, and why it is the only benchmark that matters

Break-even ROAS = 1 ÷ gross margin. At 55% margin that is 1 ÷ 0.55 = 1.82. Below 1.82 this brand loses money on every incremental order; above it, it makes money. A competitor at 30% margin needs a ROAS of 3.33 to stand still.

This is why “what’s a good ROAS?” has no universal answer, and why copying someone else’s target is the single most common planning error in Indian D2C.

Extend it one more step. If those 300 buyers are all new, CAC = ₹667. If the average customer places 2.4 orders in their lifetime, lifetime gross profit = 2.4 × ₹1,400 × 55% = ₹1,848. That gives an LTV:CAC ratio of 1,848 ÷ 667 = 2.77:1 — under the 3:1 rule of thumb investors like, so the fix is either repeat rate or CAC, not more budget. Our guide on calculating customer lifetime value in a spreadsheet walks through the cohort version of this.

What these cost metrics typically run in India

The bands below are planning estimates drawn from what Indian advertisers commonly report, not published benchmarks. Category, audience size, season and creative quality move them enormously — use them to sanity-check a plan, then replace them with your own account data within the first month.

Metric	Typical India range (estimate)	What pushes it up
Meta CPM	₹60 – ₹250	Narrow audiences, metros, festive season
Google Display CPM	₹30 – ₹120	Premium placements, tight targeting
Google Search CPC	₹8 – ₹120+	Insurance, education, legal, B2B software
Meta CPC	₹6 – ₹40	Low CTR creative, saturated audiences
YouTube CPV (cost per view)	₹0.30 – ₹1.50	Skippable vs non-skippable, audience type
CPL, lead-gen forms	₹50 – ₹800	Lead quality requirements, B2B vs B2C

Note the trap in that last row: a ₹50 CPL that converts at 1% is worse than a ₹400 CPL that converts at 20%. Cheap leads are the most expensive thing you can buy. If you are deciding where a first big budget goes, our comparison of Meta Ads vs Google Ads for Indian D2C brands gets into the split in detail.

Which cost model should you buy on?

Platforms let you optimise towards different events. The acronym you choose changes who carries the risk — you or the platform.

Model	You pay for	Risk sits with	Best for
CPM	Impressions	You	Awareness, reach-led launches
CPC / PPC	Clicks	Shared	Traffic, search intent capture
CPA / CPL	Conversions or leads	Platform	Performance, once you have volume
CPCV	Completed video views	Platform	Video storytelling where the end matters
CPI	App installs	Platform	App growth (watch post-install quality)

PPC (pay per click) and CPC describe the same thing from two sides: PPC is the buying model, CPC is the resulting price. RON (run of network) and ROS (run of site) are legacy placement terms — cheap, broad, and largely replaced by programmatic targeting.

Measurement and analytics acronyms

GA4 — Google Analytics 4, the event-based version that fully replaced Universal Analytics when the old property stopped processing data in July 2023. GTM is Google Tag Manager, the container that fires your tracking tags. API (application programming interface) is how two systems talk without a human in between — Meta’s Conversions API, for instance, sends conversion data server-to-server instead of from the browser.

CDP (customer data platform) unifies customer records across sources. ETL and ELT (extract, transform, load, in either order) are the data pipelines that feed it. KPI is a key performance indicator — the small set of numbers you actually manage to, as opposed to everything a dashboard can display.

On the modelling side: MTA is multi-touch attribution, MMM is media mix modelling, and MER is marketing efficiency ratio (total revenue ÷ total marketing spend). In the example above, if the brand did ₹6,00,000 of total revenue on ₹2,50,000 of total marketing spend, MER = 2.4 — a blended view that platform ROAS cannot inflate. Which technique fits your scale is covered in MMM vs attribution vs incrementality.

Search, content and the new AI acronyms

SEO (search engine optimisation) is earning unpaid search visibility. SEM (search engine marketing) is the paid side, though older writing sometimes uses it to mean both. SERP is the search engine results page, and a SERP feature is anything on it that is not a plain blue link.

Three newer ones now appear in briefs. AEO (answer engine optimisation) is structuring content so it can be lifted as a direct answer. GEO (generative engine optimisation) is the same discipline aimed at AI assistants that summarise rather than link — see our guide to getting cited by AI. E-E-A-T (experience, expertise, authoritativeness, trustworthiness) is the quality framework Google’s human raters apply.

Supporting cast: CMS (content management system), UX (user experience), CTA (call to action), UGC (user-generated content), SOV (share of voice), UTM (the tracking parameters you append to a link), CWV (Core Web Vitals, Google’s page-speed and stability signals), and XML — still the format your sitemap uses.

Ad tech plumbing

These matter the moment you buy outside the walled gardens of Google and Meta. A DSP (demand-side platform) is where advertisers buy inventory; an SSP (supply-side platform) is where publishers sell it. RTB (real-time bidding) is the auction between them, resolved in milliseconds while a page loads.

A PMP (private marketplace) is an invite-only version of that auction with better inventory and higher CPMs. VTR (view-through rate) is the share of video views completed; VTC (view-through conversion) is a conversion credited to someone who saw an ad but never clicked — useful signal, notoriously easy to over-credit.

OTT (over-the-top) and CTV (connected TV) describe streaming inventory, a fast-growing line item in Indian media plans. DOOH is digital out-of-home — programmatic billboards and screens.

Lifecycle, CRM and revenue acronyms

CRM is customer relationship management, both the discipline and the software. ESP is an email service provider. MAP is a marketing automation platform. MQL and SQL are marketing-qualified and sales-qualified leads — and yes, SQL collides confusingly with the database query language, so say “sales-qualified” out loud in meetings.

ICP is ideal customer profile. NPS (net promoter score) and CSAT (customer satisfaction score) measure sentiment. ARPU is average revenue per user; MRR and ARR are monthly and annual recurring revenue, the core SaaS metrics.

LTV and CLV mean the same thing — lifetime value — and teams waste real time arguing about which letters to use. What matters is whether yours is built on revenue or gross profit. Revenue-based LTV flatters every ratio it touches.

Privacy and consent acronyms you cannot ignore

PII is personally identifiable information. GDPR is the European Union’s General Data Protection Regulation; CCPA/CPRA are California’s equivalents. India’s is the DPDP Act — the Digital Personal Data Protection Act, passed in 2023, with operational rules phasing in since. If you handle Indian customer data, confirm the current compliance deadline with a legal source before you finalise consent flows; the timeline has moved more than once.

Practically, this shows up as a CMP (consent management platform) on your site and Google’s Consent Mode in your tag setup. Related: 2FA and OTP for authentication, and DNS — the domain name system — which you will meet the first time you set up a custom tracking subdomain.

Seven acronym mix-ups that cost real money

1. CPM is per thousand, not per million. “Mille” is Latin for thousand. Getting this wrong makes a budget model off by 1,000×.
2. CPA is not CAC. CPA counts every conversion including repeat buyers. CAC counts only new customers. Reporting CPA as CAC makes acquisition look far cheaper than it is.
3. ROAS is not ROI. ROAS ignores margin, salaries and tooling. A 2.1 ROAS at 55% margin returned 15.5% in our example, not 110%.
4. Reach is not impressions. Reach counts people, impressions count views. A frequency of 8 means one person saw the same ad eight times.
5. Platform ROAS double-counts. Add Meta’s reported revenue to Google’s and you will “earn” more than your Shopify dashboard shows. Use MER as the referee.
6. CTR without CVR is vanity. A 4% CTR feeding a 0.3% conversion rate is an expensive way to buy bounces.
7. MQL volume is not pipeline. If sales rejects 70% of your MQLs, your real CPL is more than three times what the dashboard says.

The quick A–Z reference

Acronym	Meaning
AOV	Average order value
API	Application programming interface
ARPU / ARR	Average revenue per user / annual recurring revenue
B2B / B2C / D2C	Business to business / to consumer / direct to consumer
CAC	Customer acquisition cost
CDP / CMP / CMS	Customer data platform / consent management platform / content management system
CPA / CPC / CPL / CPM	Cost per acquisition / click / lead / thousand impressions
CPCV / CPI / CPV	Cost per completed view / install / view
CRM / CRO	Customer relationship management / conversion rate optimisation
CTA / CTR / CVR	Call to action / click-through rate / conversion rate
CTV / OTT / DOOH	Connected TV / over-the-top / digital out-of-home
DPDP / GDPR / CCPA	India, EU and California privacy laws
DSP / SSP / RTB / PMP	Demand-side platform / supply-side platform / real-time bidding / private marketplace
E-E-A-T	Experience, expertise, authoritativeness, trustworthiness
ESP / MAP	Email service provider / marketing automation platform
ETL / ELT	Extract, transform, load (or load, transform)
GA4 / GTM	Google Analytics 4 / Google Tag Manager
GEO / AEO / SEO / SEM	Generative, answer, search engine optimisation / search engine marketing
ICP / KPI	Ideal customer profile / key performance indicator
LTV / CLV	Lifetime value of a customer
MER	Marketing efficiency ratio
MMM / MTA	Media mix modelling / multi-touch attribution
MoM / YoY	Month over month / year over year
MQL / SQL	Marketing-qualified / sales-qualified lead
MRR	Monthly recurring revenue
NPS / CSAT	Net promoter score / customer satisfaction score
PII / OTP / 2FA	Personally identifiable information / one-time password / two-factor authentication
PPC / PPV	Pay per click / pay per view
ROAS / ROI	Return on ad spend / return on investment
RON / ROS	Run of network / run of site
SERP / SOV	Search engine results page / share of voice
UGC / UTM / UX	User-generated content / urchin tracking module parameters / user experience
VTR / VTC	View-through rate / view-through conversion
WYSIWYG / XML / TL;DR	What you see is what you get / extensible markup language / too long, didn’t read

What this means for you

• Calculate your break-even ROAS today. One divided by your gross margin. Write it on the dashboard. Every bidding decision hangs off that one number.
• Report CPA and CAC separately. If you cannot split new from repeat customers, that is the reporting gap to close first.
• Build LTV on gross profit, not revenue. Then check LTV:CAC. Under 3:1 means fix retention or acquisition cost before you raise budget.
• Add MER to your weekly review. It is the one number platform algorithms cannot inflate, and it takes two minutes to compute.
• Diagnose in order: CTR, then CVR, then CPA. Low CTR is a creative or audience problem. Good CTR with low CVR is a landing page or offer problem. Fixing the wrong one wastes a month.
• Define acronyms in your own briefs. Spelling out “SQL (sales-qualified lead)” once per document prevents the misunderstandings that derail handovers between marketing and sales.

Frequently asked questions

What does CPM mean in digital marketing?

CPM means cost per mille — the cost of one thousand ad impressions, since “mille” is Latin for thousand. The formula is spend divided by impressions, multiplied by 1,000. If you spend ₹2,00,000 and get 10,00,000 impressions, your CPM is ₹200. It is the standard pricing unit for awareness and display advertising because it measures the cost of being seen rather than the cost of a response. It is commonly misread as “cost per million”, an error that throws budget models off by a factor of 1,000.

What is the difference between CPA and CAC?

CPA (cost per acquisition) divides campaign spend by all conversions, including orders from customers who have bought before. CAC (customer acquisition cost) divides acquisition spend by new customers only, and usually includes costs beyond media — agency fees, tools, sometimes salaries. CPA is therefore almost always the lower and more flattering number. Use CPA to optimise individual campaigns and CAC to judge whether the business can afford to grow. Reporting one as the other is a common way that acquisition economics get quietly overstated.

Is ROAS the same as ROI?

No. ROAS (return on ad spend) is revenue divided by ad spend and ignores your costs entirely. ROI (return on investment) accounts for margin, and usually for salaries, tools and agency fees too. A ROAS of 2.1 on a product with 55% gross margin produces ₹2,31,000 of gross profit from ₹4,20,000 of revenue — only ₹31,000 more than the ₹2,00,000 spent. That is roughly a 15% return, not a 110% one. Always check ROAS against your break-even ROAS, which is 1 divided by your gross margin.

What is a good CTR and CPC in India?

There is no universal figure, and the honest answer is that your own account history is the only reliable benchmark. As rough planning estimates, Indian advertisers commonly report Meta CPCs in the ₹6 to ₹40 range and Google Search CPCs from around ₹8 to well over ₹120 in competitive categories like insurance, education and B2B software. Click-through rate matters mainly in combination with conversion rate: a high CTR feeding a weak landing page just buys expensive bounces. Judge both together, against cost per acquisition.

What do GEO and AEO mean, and how are they different from SEO?

SEO (search engine optimisation) is the practice of earning unpaid visibility on search results pages. AEO (answer engine optimisation) structures content so it can be extracted as a direct answer in featured snippets and voice results. GEO (generative engine optimisation) targets AI assistants that summarise sources rather than list links, aiming for citation inside a generated answer. All three reward the same fundamentals — clear structure, factual specificity, genuine expertise — but GEO puts more weight on being quotable in self-contained passages.

LTV or CLV — which acronym is correct?

Both are correct and they mean the same thing: the total value a customer generates over their relationship with you. LTV (lifetime value) is more common in advertising and app marketing; CLV (customer lifetime value) is more common in CRM and finance. The distinction that actually matters is whether the figure is built on revenue or on gross profit. Gross-profit-based lifetime value is the version worth comparing against CAC, because it reflects money you keep rather than money that passed through.