Stack Builder
Six reference stacks — pre-seed to enterprise — with vendor picks, monthly cost math, architecture, and a graduation path between tiers. Pick yours and see exactly what to buy and what to skip.
Pre-revenue or sub-$50K ARR. Founder-led outbound. ICP not yet validated. Goal: get to first 10 customers without burning $5K/mo on tooling.
Seed-funded B2B SaaS, 1–3 sales reps, validated ICP, $0–$2M ARR. Motion is primarily outbound with emerging inbound signal. Goal: build a personalized outbound machine…
Series A B2B SaaS scaling from $1M to $5M ARR. 2–4 SDRs, AE-led close motion, single ICP, multi-channel outbound (email + LinkedIn) with deanonymization…
Series B B2B SaaS scaling from $5M to $15M ARR. 5–10 SDRs plus an AI-SDR layer (Claude-powered) running tier-2 accounts, mid-market ICP expansion, dedicated…
Series C B2B SaaS at $15M–$50M ARR moving up-market. 10–25 SDRs, multiple AEs per segment, enterprise pilot motion alongside mid-market self-serve. Sequencer migrates from…
Series B+ B2B SaaS or enterprise software, 10+ quota-carrying reps, dedicated RevOps team, $15M+ ARR. Running named-account programs, multi-channel sales engagement, and board-level revenue…
| Tier | Best for | Tools | Monthly cost | |
|---|---|---|---|---|
| Pre-Seed | Pre-revenue or sub-$50K ARR. Founder-led outbound. ICP not yet validated. Goal: get to first… | 3 · Apollo, Smartlead, HubSpot | $137/mo | View → |
| Seed | Seed-funded B2B SaaS, 1–3 sales reps, validated ICP, $0–$2M ARR. Motion is primarily outbound… | 5 · Apollo, Clay, Smartlead | $1,200/mo | View → |
| Series A | Series A B2B SaaS scaling from $1M to $5M ARR. 2–4 SDRs, AE-led close… | 9 · Clay, Smartlead, HubSpot | $4,000/mo | View → |
| Series B | Series B B2B SaaS scaling from $5M to $15M ARR. 5–10 SDRs plus an… | 9 · Clay, Smartlead, HubSpot | $10,000/mo | View → |
| Series C | Series C B2B SaaS at $15M–$50M ARR moving up-market. 10–25 SDRs, multiple AEs per… | 9 · HubSpot, Outreach, Clay | $17,000/mo | View → |
| Enterprise | Series B+ B2B SaaS or enterprise software, 10+ quota-carrying reps, dedicated RevOps team, $15M+… | 7 · Salesforce, ZoomInfo, Outreach | $25,000/mo | View → |
Costs are sums of vendor entry-price tiers from each stack's tool list. Real-world spend varies with seat count, usage, and credit purchases — see the single-stack pages for full breakdowns.