You Just Raised Your Series B. Stop Marketing Like a Startup.

You closed your Series B. The board wants enterprise logos. Your investors are asking about pipeline coverage against an $8M+ target. And your marketing team is two people who've been running the SMB playbook that got you here.

I work with Series B SaaS companies through SignalFire's portfolio, helping them build account-based go-to-market motions from scratch. The pattern I see over and over is the same: companies try to go upmarket by doing more of what already works. More content. More webinars. More SDR outreach. More of the same playbook, aimed at bigger logos.

It doesn't work. Here's what does.

The SMB Playbook Breaks at Enterprise

The shift from SMB to enterprise isn't a volume problem. It's a motion problem.

In SMB, a single buyer finds your product, runs a trial, and swipes a credit card. Your marketing job is reach and conversion: get in front of enough people and a percentage will self-serve. At enterprise, that model collapses. Forrester puts the average B2B buying group at 13 stakeholders, and complex enterprise deals can run past 20. Your content marketing blog post isn't closing that deal.

Enterprise requires account-based thinking. Not account-based marketing. Account-based experience. The difference matters.

ABM is a marketing program. It targets accounts with ads and sends them emails. ABX is a go-to-market strategy. It aligns marketing, sales, and customer success around a shared set of accounts and orchestrates a coordinated experience from first touch through expansion.

If your marketing team is still handing MQLs to sales and calling it a day, you're running a 2019 playbook in a 2026 market.

Start with 20 Accounts, Not 2,000

The biggest mistake Series B companies make with ABX is going too broad too fast. You don't need a 6sense contract and 2,000 target accounts. You need a focused list and a clear thesis about who buys your product and why.

Here's the tiering framework I use:

Tier 1 (1:1), 20-30 accounts. These get personalized outreach, custom content, and direct executive engagement. Your CEO and your head of sales should know these accounts by name. Every touchpoint is intentional.

Tier 2 (1:Few), 50-100 accounts. These get segment-specific campaigns. Group them by industry, use case, or buying signal. The content is relevant to their world but not individually customized.

Tier 3 (1:Many), broader demand gen. This is your existing playbook, optimized. It still matters. It's just not how you win enterprise deals.

Most Series B companies try to do Tier 2 and 3 at scale before they've proven they can win a single Tier 1 account. Reverse it. Start with 20 accounts. Build the muscle. Then scale.

The 90-Day Sprint

You don't need a year-long ABX transformation. You need 90 days of focused execution to prove the model works.

Days 1-30: Build the foundation. Define your ICP with data, not assumptions. Pull your closed-won deals and find the patterns: company size, industry, tech stack, buying triggers. Build your Tier 1 list from those patterns. Set up a simple scoring model: fit (does this account match your ICP?), intent (are they showing buying signals?), engagement (are they interacting with your content or sales team?).

Days 31-60: Launch your first plays. Create three intent-triggered campaigns. When a Tier 1 account visits your pricing page, what happens? When a target persona engages with your content, who gets notified? When a champion changes jobs and lands at a target account, how fast does your team act? These plays don't require sophisticated technology. They require clear triggers, defined owners, and fast follow-through.

Days 61-90: Measure and iterate. Track four metrics: account coverage (are you reaching the right people at target accounts?), engagement depth (are multiple stakeholders engaging?), pipeline creation (are accounts converting to opportunities?), and velocity (how fast are they moving?). If engagement is strong but pipeline isn't converting, you have a sales handoff problem. If coverage is low, you have a targeting problem. The data tells you where to focus.

You Don't Need Enterprise Tools to Run Enterprise ABX

The tech stack question comes up immediately, and it's usually the wrong conversation to have first. 6sense and Demandbase are powerful platforms, but they cost $50K-$150K a year and require dedicated ops support. For a Series B team with two or three marketers, that's the wrong investment.

Start simple. Your CRM (HubSpot or Salesforce) is your system of record for accounts. Clay or RollWorks can layer in intent signals and enrichment data at a fraction of the cost. LinkedIn Sales Navigator gives your sales team account-level targeting. A shared Slack channel with your AEs creates the real-time feedback loop that no tool can replace.

The technology matters less than the discipline. The companies that win at ABX are the ones where marketing and sales sit in the same weekly meeting, look at the same account list, and hold each other accountable for engagement and pipeline on those accounts.

The Hard Part Isn't Strategy. It's Patience

Enterprise deals take 6-18 months. If your board expects ABX to produce pipeline in the first quarter, set expectations early. The leading indicators show up in 60-90 days: engagement depth, multi-threaded conversations, executive access. Pipeline and revenue follow in two to three quarters.

The companies that abandon ABX after three months are the ones that never gave it a chance to work. The ones that commit to the 90-day sprint, measure the right leading indicators, and iterate weekly are the ones that build a repeatable enterprise engine.

You raised your Series B to go big. Stop marketing like a startup and start selling like the enterprise company you're building.