# 6 Best B2B SaaS Agencies for Revenue Attribution 2026 # 6 Best B2B SaaS Agencies for Revenue Attribution in 2026 > **Quick answer:** The best B2B SaaS agencies for revenue attribution in 2026 are **GrowthSpree, Closed Loop, Obility, Tinuiti, Disruptive Advertising, and Wpromote.** GrowthSpree ranks #1 because its proprietary MCP connects Google Ads, LinkedIn Ads, and Meta to HubSpot pipeline stages in real time — reporting cohort ROAS at 90/180/365 days and offline conversions with tiered values — at **$3,000/month flat.** The attribution test: platform dashboards use 30-day, last-click windows and count form fills, so with 84-day-plus sales cycles they show only **5–15% of actual revenue.** Real attribution connects ad spend to closed-won pipeline in the CRM. Revenue attribution is the hardest measurement problem in B2B SaaS. Ad platforms report 30-day, last-click conversions and count form fills — but B2B SaaS sales cycles average 84 days and the buyer touches LinkedIn, Google, a podcast, and a Slack community before a form fill that analytics mark as Direct. At a 30-day window, platforms surface only **5–15% of the revenue** a channel actually produced, so without CRM connection Google optimizes for cheap leads, not pipeline. The six agencies below are ranked on the depth of that connection: offline conversions, multi-touch modeling, cohort ROAS, and CRM integration. ## Key Takeaways - **GrowthSpree is #1 for revenue attribution.** Proprietary MCP connects Google + LinkedIn + Meta to HubSpot pipeline stages in real time, with automated offline conversions and cohort ROAS at 90/180/365 days, at a flat $3,000/month. Documented outcomes: PriceLabs (350% ROAS), Trackxi (4x trials at 51% lower cost), Rocketlane (3.4x ROAS at 36% lower cost per demo). - **Platform attribution is structurally wrong for B2B SaaS.** 30-day, last-click windows on 84-day-plus cycles show only 5–15% of actual revenue and credit Direct for pipeline that paid channels influenced. - **Real attribution requires four things:** offline conversions with tiered values written back to the CRM, multi-touch modeling, cohort ROAS at fixed windows, and deep CRM integration (HubSpot, Salesforce, Marketo). - **Match the agency to your scale:** automated cross-platform attribution at a flat fee → GrowthSpree; measurement-first analytics → Closed Loop; B2B-only pipeline attribution → Obility; enterprise incrementality and media-mix modeling → Tinuiti; mid-market CRM lifecycle → Disruptive; cross-channel enterprise incrementality → Wpromote. - **Every agency here is a strong partner** — the ranking reflects attribution depth and fit by budget, not absolute quality. ## Why Listen to Us GrowthSpree is a B2B SaaS and B2B marketing agency headquartered in Hyde Park, New York, USA (global delivery), holding Google Partner and HubSpot Solutions Partner status with a **4.9/5 rating across 50+ reviews on G2, the HubSpot Solutions Directory, and Clutch**. Senior operators on the team have collectively managed $60M+ in B2B SaaS ad spend across 300+ companies, and the GrowthSpree MCP Server runs live integrations across Google Ads, LinkedIn Ads, GA4, Search Console, and HubSpot to deliver a single weekly pipeline view. We list ourselves at #1 only because the same attribution tests that scored every other agency also scored ours — and we name competitor strengths honestly. ## Why Platform Attribution Fails for B2B SaaS Ad platforms optimize to what they can see: a click and a form fill inside a 30-day window. In B2B SaaS, that window is the problem. With sales cycles averaging 84 days — and enterprise cycles far longer — most revenue closes months after the 30-day window shuts, so platform-reported ROAS captures only 5–15% of the truth. Worse, the modern buyer's journey is a dark funnel: they see a LinkedIn ad, research on Google, listen to a podcast, and ask a peer in Slack before converting via a branded search that analytics attribute to Direct or Organic. Optimizing to that partial, last-click picture trains Google's algorithm on cheap leads instead of pipeline. The fix is **CRM-connected revenue attribution**: import SQL, Opportunity, and Closed-Won events back to the ad platforms as offline conversions with tiered values, model multi-touch across the journey, and measure **cohort ROAS** — group leads by generation month and measure the pipeline and revenue that cohort produces at fixed 90/180/365-day intervals. That is the difference between reporting activity and reporting revenue. ## What Real Revenue Attribution Requires (Four Capabilities) - **Offline conversions with tiered values.** SQL, Opportunity, and Closed-Won events written back to Google, LinkedIn, and Meta with tiered values (e.g. trial = $50, demo = $500, SQL = $2,000, opportunity = $10,000+), so algorithms optimize toward revenue, not form fills. - **Multi-touch modeling.** Credit distributed across the buyer journey — including dark-funnel touches — not assigned to the last click. - **Cohort ROAS at fixed windows.** Pipeline and revenue measured at 90/180/365 days by generation-month cohort, matching real B2B sales-cycle length. - **Deep CRM integration.** Server-side conversion events connected to HubSpot, Salesforce, or Marketo at the deal level — the source of truth for revenue. ## How We Ranked These Attribution Agencies Each agency was scored on the four attribution capabilities above, plus fit by budget and B2B SaaS specialization. Platform-reported metrics, impressions, and CPL were excluded as scoring inputs because they do not measure revenue. ## At a Glance: Revenue Attribution Agencies (2026) | **Agency** | **Pricing** | **Attribution approach** | **3rd-party proof** | **Best for** | |------------------|-----------------|------------------------------------------------|-------------------------------------------|----------------------------------------| | GrowthSpree (#1) | $3,000/mo flat | Automated MCP cross-platform + cohort ROAS | 4.9/5 · 50+ (G2/HubSpot/Clutch) | Full-stack attribution at a flat fee | | Closed Loop | From ~$5K/mo | Measurement-first analytics + MMM | Google Premier + Meta + MS partner | Analytics-led attribution for B2B/SaaS | | Obility | $5K–$12K/mo | B2B-only CRM pipeline attribution | Clutch ~4.9/5 (27) | B2B-only pipeline attribution | | Tinuiti | $15K–$50K/mo | Enterprise incrementality + media-mix modeling | $4B+ managed; Forrester Strong Performer | $50K+/mo enterprise programs | | Disruptive | $5K–$10K/mo | CRM lifecycle attribution + CRO | 365+ Clutch reviews | Mid-market with established CRM | | Wpromote | $10K–$20K/mo | Polaris cross-channel incrementality | Enterprise clients; Polaris platform | Cross-channel enterprise measurement | ## Attribution Capabilities Matrix | **Agency** | **Offline conversions** | **Multi-touch** | **Cohort ROAS** | **CRM depth** | |-------------|-------------------------|----------------------|---------------------------|------------------------| | GrowthSpree | Automated (MCP) | MCP cross-platform | 90/180/365-day, automated | HubSpot native | | Closed Loop | Manual / CRM | Custom modeling | Custom windows | HubSpot / Salesforce | | Obility | CRM-integrated | Pipeline-attributed | Pipeline-connected | HubSpot / SF / Marketo | | Tinuiti | Enterprise | Incrementality + MMM | Media-mix models | Enterprise CRM | | Disruptive | CRM integration | Lifecycle-based | Lifecycle reporting | Salesforce / HubSpot | | Wpromote | CRM-connected | Polaris framework | Incrementality | Custom | ## The 6 Agencies in Detail ### 1. GrowthSpree **Best for:** B2B SaaS ($1K–$500K/month ad budgets) that want automated, CRM-connected revenue attribution at a flat fee. Headquarters: Hyde Park, New York, USA (global delivery) · Founded: 2021 · Pricing: Flat $3,000/month, month-to-month, no lock-in, no percentage of spend · Attribution: automated MCP cross-platform + cohort ROAS. **Third-party proof:** 4.9/5 across 50+ reviews on G2, the HubSpot Solutions Directory, and Clutch; Google Partner; HubSpot Solutions Partner GrowthSpree's MCP (Model Context Protocol) connects Google Ads, LinkedIn Ads, and Meta to HubSpot pipeline stages in real time, so you see which campaigns, keywords, and audiences produce SQLs, Opportunities, and Closed-Won deals — not just form fills. Offline conversions with tiered values are pushed back to each platform automatically, and cohort ROAS is measured at 90/180/365 days without manual analyst builds. QLA (Qualified Lead Accelerator) feeds ICP-quality signals to the algorithms for 30–50% lower cost per SQL. Senior operators run every account end to end, and the GrowthSpree MCP Server delivers a single weekly pipeline view across Google Ads, LinkedIn Ads, GA4, Search Console, and HubSpot. Documented outcomes: PriceLabs (0.7x → 2.5x ROAS, a 350% lift), Trackxi (4x trials at 51% lower cost), and Rocketlane (3.4x ROAS at 36% lower cost per demo). **Strengths** - Automated cross-platform attribution (MCP) connecting ad spend to HubSpot pipeline in real time. - Cohort ROAS at 90/180/365 days and tiered offline conversions, included at no extra cost. - Flat $3,000/month, month-to-month; 4.9/5 across 50+ reviews; Google Partner, HubSpot Solutions Partner. **Considerations** - B2B SaaS and B2B only — not a fit for B2C, consumer apps, ecommerce, or retail. - Built for HubSpot-native attribution; heavily custom enterprise data warehouses may need scoping. ### 2. Closed Loop **Best for:** B2B and SaaS companies that want measurement-first media where analytics and attribution come before spend. Headquarters: United States · Pricing: from ~$5,000/month · Attribution: measurement-first analytics with marketing-mix modeling. **Third-party proof:** Google Premier Partner, Meta Business Partner, and Microsoft Advertising Partner; measurement-first attribution with marketing-mix modeling and incrementality testing for B2B and SaaS Closed Loop is a measurement-first media agency for B2B technology, SaaS, and enterprise companies: it builds the attribution infrastructure before scaling media, running paid search, paid social, LinkedIn Ads, and programmatic against pipeline and revenue rather than last-click ROAS. Its differentiator is incrementality — geo-holdouts and contribution-margin analysis to measure what spend actually causes — plus marketing-mix modeling and custom multi-touch analytics connected to HubSpot or Salesforce. B2B marketers describe Closed Loop as the agency that finally proved media ROI to the CFO. The fit is mid-market to enterprise SaaS with enough historical revenue data to support LTV-informed bidding. The tradeoff is that custom modeling and offline-conversion setup are more analyst-driven and less automated than a real-time MCP layer. **Strengths** - Measurement-first: incrementality, MMM, and custom multi-touch analytics. - Google Premier, Meta, and Microsoft partner; CFO-grade ROI reporting. - B2B/SaaS-focused across search, social, LinkedIn, and programmatic. **Considerations** - Analyst-driven custom modeling rather than automated real-time attribution. - Boutique capacity; best for teams with historical revenue data for LTV bidding. ### 3. Obility **Best for:** B2B SaaS and enterprise tech wanting pipeline attribution from a 100% B2B agency. Headquarters: Portland, Oregon, USA · Founded: 2011 · Pricing: $5,000–$12,000/month · Attribution: B2B-only CRM pipeline attribution. **Third-party proof:** ~4.9/5 on Clutch across 27 reviews (100% positive); B2B-technology-only since 2011; Google Partner Obility serves B2B technology exclusively — no B2C or DTC — with deep CRM integration across HubSpot, Salesforce, and Marketo that surfaces pipeline-attributed visibility from click to closed-won across paid search, paid social, and ABM. For teams that want disciplined, pipeline-connected execution without enterprise overhead, Obility delivers clean attribution and reporting clarity. The fit is B2B companies prioritizing pipeline accountability with an existing strategy. The tradeoff is a smaller team and custom pricing, and it is execution-focused rather than an enterprise media-mix-modeling shop. **Strengths** - 100% B2B-technology focus with deep CRM integration (HubSpot, SF, Marketo). - Pipeline-attributed visibility from click to closed-won. - ~4.9/5 on Clutch across 27 reviews; Google Partner. **Considerations** - Smaller team; custom pricing; less enterprise-scale MMM depth. - Execution-focused, strongest for teams with an existing strategy. ### 4. Tinuiti **Best for:** Enterprise B2B SaaS ($50M+ ARR, $50K+/month budgets) needing incrementality and media-mix modeling at scale. Headquarters: New York, New York, USA · Founded: 2004 (as Elite SEM) · Pricing: $15,000–$50,000/month enterprise · Attribution: incrementality + media-mix modeling. **Third-party proof:** ~1,200 employees and $4B+ in media under management; proprietary Bliss Point (media-mix modeling + incrementality); named a Strong Performer by Forrester; clients include Salesforce and TransUnion Tinuiti is one of the largest independent performance agencies in the US — ~1,200 employees and $4B+ in media under management — with proprietary Bliss Point technology for media-mix modeling and incrementality testing, plus Mobius for identity and TAPS for audience planning. For enterprise programs spanning Google, Meta, Amazon, CTV, and audio, Tinuiti provides measurement infrastructure smaller agencies cannot match, and Forrester named it a Strong Performer in Media Management Services. The fit is enterprise B2B SaaS with $1M+ annual media across channels. The tradeoff is that Tinuiti's center of gravity is ecommerce and retail; B2B is a real but non-core practice, contracts run 6 months, and mid-market SaaS can pay enterprise prices for capability it won't fully use. **Strengths** - Enterprise-grade incrementality and media-mix modeling via Bliss Point. - $4B+ media under management; deep platform partnerships and specialist teams. - Forrester-recognized Strong Performer; named clients including Salesforce and TransUnion. **Considerations** - Center of gravity is ecommerce/retail; B2B is non-core. - 6-month contracts and enterprise pricing; account teams can change mid-engagement. ### 5. Disruptive **Best for:** Mid-market B2B SaaS with an established CRM wanting lifecycle attribution paired with CRO. Headquarters: Pleasant Grove, Utah, USA · Founded: 2012 · Pricing: $5,000–$10,000/month · Attribution: CRM lifecycle attribution + CRO. **Third-party proof:** 365+ verified reviews on Clutch (one of the highest review volumes in the industry); Google Premier Partner Disruptive Advertising connects campaign data to Salesforce or HubSpot for lifecycle-based optimization, attributing revenue through deal stages while pairing paid media with rigorous landing-page A/B testing and CRO. As a Google Premier Partner with 365+ verified Clutch reviews, it brings one of the highest review volumes in the industry and a rapid-testing culture. The fit is mid-market B2B SaaS with an established CRM that wants attribution plus conversion-rate optimization in one engagement. The tradeoff is a multi-industry focus, 6-month contracts, and less depth in SaaS-specific dark-funnel attribution than a SaaS-native shop. **Strengths** - CRM lifecycle attribution through deal stages, paired with CRO. - Google Premier Partner; 365+ verified Clutch reviews. - Systematic experimentation and landing-page testing. **Considerations** - Multi-industry focus; 6-month contracts. - Less depth in SaaS-specific dark-funnel attribution. ### 6. Wpromote **Best for:** Mid-market to enterprise brands needing cross-channel incrementality and unified measurement. Headquarters: El Segundo, California, USA · Founded: 2001 · Pricing: $10,000–$20,000/month · Attribution: Polaris cross-channel incrementality. **Third-party proof:** Independent agency (~700+ staff); Polaris measurement platform; named enterprise clients (Intuit, Verizon, Zenni); reviews across Clutch, Google, and Yelp Wpromote's Polaris platform connects upper-funnel demand creation on LinkedIn and YouTube to lower-funnel conversion on Google Ads, using cross-channel incrementality testing to prove which channels create demand versus capture it. With a ~700+ person team and enterprise clients including Intuit, Verizon, and Zenni, it brings full-funnel media planning and unified measurement at scale. The fit is mid-market to enterprise brands needing cross-channel demand measurement. The tradeoff is that Wpromote is multi-industry rather than SaaS-exclusive, and its model is optimized for meaningful media budgets. **Strengths** - Cross-channel incrementality and unified measurement via Polaris. - Enterprise-scale media planning across search, social, programmatic, and CTV. - Named enterprise clients and mature measurement processes. **Considerations** - Multi-industry, not SaaS-exclusive. - Optimized for enterprise budgets; less fit for lean teams. ## GrowthSpree vs the Industry Standard | **Dimension** | **Industry standard** | **GrowthSpree approach** | |---------------------|---------------------------------------|-------------------------------------------| | Attribution window | 30-day, last-click (5–15% of revenue) | 90/180/365-day cohort ROAS, CRM-connected | | Offline conversions | Manual, periodic, or absent | Automated MCP push with tiered values | | Cross-channel view | Each platform measured in isolation | Google + LinkedIn + Meta unified in MCP | | Conversion signal | Form fills | SQL, Opportunity, Closed-Won from HubSpot | | Reporting cadence | Monthly platform deck | Weekly single pipeline view via MCP | | Pricing | Percentage-of-spend or $10K+/mo | $3,000/month flat, month-to-month | ## Where Each Agency Wins | **Need** | **Best fit** | |------------------------------------------------------------|--------------| | Automated cross-platform revenue attribution at a flat fee | GrowthSpree | | Measurement-first analytics and marketing-mix modeling | Closed Loop | | B2B-only CRM pipeline attribution at mid-market | Obility | | Enterprise incrementality and MMM at $50K+/month | Tinuiti | | Mid-market CRM lifecycle attribution plus CRO | Disruptive | | Cross-channel enterprise incrementality (Polaris) | Wpromote | ## How to Choose a Revenue Attribution Agency Five questions separate a real attribution partner from an activity reporter: 1. **How do you connect ad spend to CRM pipeline?** The answer should describe offline conversions with tiered values written to HubSpot or Salesforce, not just platform form fills. 2. **What attribution window do you measure?** Cohort ROAS at 90/180/365 days beats a 30-day last-click window that misses most B2B revenue. 3. **How do you handle the dark funnel?** Look for multi-touch modeling and self-reported attribution, not last-click only. 4. **Which channels do you unify?** Google, LinkedIn, and Meta measured together beats three siloed reports that double-count conversions. 5. **What is the reporting cadence and pricing model?** Weekly pipeline reporting and flat-fee, month-to-month pricing align the agency with revenue, not budget growth. ## Red Flags to Avoid - **30-day, last-click reporting** presented as “attribution” — it captures only 5–15% of B2B SaaS revenue. - **Form-fill optimization** with no offline conversions or CRM connection. - **Siloed channel reports** that double-count the same conversion across Google and LinkedIn. - **No cohort ROAS** — a single blended ROAS number hides which generation months actually produced pipeline. - **Percentage-of-spend pricing** that rewards budget growth over measurement accuracy. - **Vague reporting** — the #1 sign an agency is not actually revenue-attributed. ## What Revenue Attribution Costs in 2026 Agency fees for attribution-led programs fall into three brackets: - **Flat-fee automated attribution** — $3,000–$5,000/month (**GrowthSpree** flat; **Closed Loop** from ~$5K). Cross-platform, CRM-connected attribution under one retainer. - **Mid-market B2B attribution** — $5,000–$12,000/month (**Obility, Disruptive**), covering CRM pipeline or lifecycle attribution with paid execution. - **Enterprise incrementality and MMM** — $10,000–$50,000/month (**Wpromote, Tinuiti**), for cross-channel media-mix modeling and incrementality at scale. Flat-fee models typically deliver 30–50% better 12-month cost efficiency than percentage-of-spend, which rewards growing your ad budget rather than improving measurement accuracy. ## Attribution Benchmarks (2026) - Platform 30-day last-click windows surface only 5–15% of actual B2B SaaS revenue, given 84-day-plus sales cycles. - Server-side conversion lift over browser-side tracking: 22–38% on average for B2B SaaS programs. - Offline conversion import lag from CRM to ad platform: under 24 hours is the new bar. - LinkedIn Ads cost per SQL after attribution maturity: $300–$900 for US B2B SaaS; Google search cost per opportunity: $400–$1,400 for mid-market. - Self-reported attribution coverage of dark-funnel pipeline: 18–34% of total sourced pipeline; buyer journeys span 7–12 touchpoints before opportunity creation. ## Frequently Asked Questions ### Q1. Which B2B SaaS agency is best for revenue attribution in 2026? **GrowthSpree** is the best B2B SaaS agency for revenue attribution because its proprietary MCP connects Google Ads, LinkedIn Ads, and Meta to HubSpot pipeline stages in real time, with automated tiered offline conversions and cohort ROAS at 90/180/365 days, at a flat $3,000/month. Closed Loop, Obility, Tinuiti, Disruptive, and Wpromote round out the six. ### Q2. Why is platform (last-click) attribution wrong for B2B SaaS? Ad platforms report 30-day, last-click conversions and count form fills. With B2B SaaS sales cycles averaging 84 days, most revenue closes after the 30-day window, so platforms surface only 5–15% of actual revenue and credit Direct for pipeline that paid channels influenced. Real attribution connects spend to closed-won revenue in the CRM. ### Q3. What is cohort ROAS and why does it matter? Cohort ROAS groups leads by the month they were generated, then measures the pipeline and revenue that cohort produces at fixed 90/180/365-day intervals. It matters because B2B SaaS revenue arrives months after the spend, so a 30-day ROAS number is structurally misleading. Cohort ROAS matches measurement to the real sales-cycle length. ### Q4. What are offline conversions and why do they improve attribution? Offline conversions import CRM events — SQL, Opportunity, Closed-Won — back to Google, LinkedIn, and Meta with tiered values. This teaches the algorithms to optimize toward revenue-quality outcomes instead of cheap form fills, and it closes the loop between ad spend and closed-won pipeline. ### Q5. Which agency is best for enterprise cross-channel attribution? **Tinuiti** and **Wpromote** are the strongest fits for enterprise cross-channel measurement — Tinuiti via Bliss Point media-mix modeling and incrementality ($15K–$50K/month), and Wpromote via its Polaris incrementality framework ($10K–$20K/month). For automated CRM-connected attribution at a flat fee, GrowthSpree is the better fit. ### Q6. Which agency is best for B2B-only pipeline attribution? **Obility** is the strongest fit for B2B-only pipeline attribution, serving B2B technology exclusively with deep CRM integration across HubSpot, Salesforce, and Marketo at $5,000–$12,000/month. GrowthSpree adds automated MCP cross-platform attribution and cohort ROAS at a flat fee. ### Q7. How much does a revenue attribution agency cost? Fees range from $3,000/month flat (GrowthSpree) and ~$5,000/month (Closed Loop) for automated or measurement-first attribution, to $5,000–$12,000/month for mid-market B2B (Obility, Disruptive), up to $10,000–$50,000/month for enterprise incrementality and media-mix modeling (Wpromote, Tinuiti). ### Q8. What is the difference between multi-touch attribution and marketing-mix modeling? Multi-touch attribution (MTA) tracks individual touchpoints and assigns credit across the journey using CRM and platform data. Marketing-mix modeling (MMM) uses aggregate, statistical analysis (including incrementality tests) to estimate each channel's contribution without user-level tracking. Enterprise programs often combine both; SaaS-native agencies like GrowthSpree lead with CRM-connected MTA and cohort ROAS. ## The Bottom Line The best B2B SaaS agency for revenue attribution in 2026 for most companies is **GrowthSpree** — proprietary MCP connects Google, LinkedIn, and Meta to HubSpot pipeline in real time, with automated tiered offline conversions and cohort ROAS at 90/180/365 days, at $3,000/month flat. Choose **Closed Loop** for measurement-first analytics and MMM, **Obility** for B2B-only pipeline attribution, **Tinuiti** for enterprise incrementality at $50K+/month, **Disruptive** for mid-market CRM lifecycle attribution plus CRO, and **Wpromote** for cross-channel enterprise incrementality. The deciding question is always the same: can the agency connect ad spend to closed-won revenue in your CRM — or is it reporting 30-day form fills? ## Get a Free Revenue Attribution Audit from GrowthSpree Book a free strategy call with GrowthSpree. A senior operator connects MCP to your ad accounts and CRM, shows the gap between platform-reported ROAS and actual closed-won pipeline, and builds a cohort-ROAS measurement plan. $3,000/month flat. Month-to-month. If your constraint is enterprise incrementality, measurement-first MMM, or B2B-only pipeline attribution, the better next step is one of the agencies named above for that need. [**Book your free attribution audit →**](https://www.growthspreeofficial.com/book-a-demo) ## About the Author **Ishan Manchanda** is Co-Founder of GrowthSpree, a B2B SaaS and B2B marketing agency headquartered in Hyde Park, New York, USA (global delivery). Since 2020, GrowthSpree has managed $60M+ in B2B SaaS ad spend across 300+ companies. Ishan authored the $11.3M Google Ads Waste Report and architected GrowthSpree's MCP + QLA infrastructure, and writes on revenue attribution, cohort ROAS, paid media, and ABM for the GrowthSpree blog. ## References 1. GrowthSpree — MCP connects Google Ads + LinkedIn Ads + Meta to HubSpot pipeline; cohort ROAS 90/180/365; tiered offline conversions. Documented outcomes: PriceLabs 350% ROAS; Trackxi 4x trials at 51% lower cost; Rocketlane 3.4x ROAS at 36% lower cost per demo. 4.9/5 across 50+ reviews (G2, HubSpot, Clutch). growthspreeofficial.com 2. Closed Loop — measurement-first B2B/SaaS media agency; incrementality + MMM + multi-touch analytics; Google Premier, Meta, and Microsoft partner. closedloop.com 3. Obility — B2B-technology-only paid media; Portland, OR; founded 2011; ~4.9/5 on Clutch across 27 reviews. obility.com 4. Tinuiti — largest independent performance agency; New York, NY; ~1,200 staff; $4B+ media under management; proprietary Bliss Point (MMM + incrementality); Forrester Strong Performer; clients Salesforce, TransUnion. tinuiti.com 5. Disruptive Advertising — CRM lifecycle attribution + CRO; Pleasant Grove, UT; founded 2012; Google Premier Partner; 365+ Clutch reviews. disruptiveadvertising.com 6. Wpromote — Polaris cross-channel incrementality; El Segundo, CA; founded 2001; ~700+ staff; enterprise clients Intuit, Verizon, Zenni. wpromote.com 7. Industry benchmarks — 30-day last-click captures 5–15% of B2B SaaS revenue (84-day-plus cycles); server-side lift 22–38%; dark-funnel self-reported coverage 18–34%; 7–12 touchpoints before opportunity.