Types of Sales: The 9 Models a Service Business Actually Chooses Between

By Christoph Olivier, Founder, CO Consulting.

Last reviewed: July 2026

There are nine types of sales worth knowing, and they split across three axes: who you sell to (B2B, B2C, B2G), how you reach them (inside, outside), and the motion the deal demands (transactional, enterprise, channel, self-service). Most guides list these as trivia. This one tells you which model to staff first when you run a 7-figure service business, because picking the wrong one is how founders burn a year and a payroll. I have built sales motions for consultancies, agencies, and SaaS teams, and the model choice decided the outcome more than the reps did.

The 9 types of sales at a glance

The nine types of sales are B2B, B2C, and B2G by buyer; inside and outside by location; and transactional, enterprise, channel, and self-service by motion. A single deal often carries more than one label at once. A B2B enterprise deal run by an inside rep through a partner is all four things simultaneously. The table below sorts them so you can place your own business inside it.

Read your own business across the three axes. A fractional CMO service selling to $5M founders is B2B, inside, and enterprise-lite. A DTC skincare brand is B2C, inside, and transactional. Naming your row is the first decision. Everything downstream (comp, tooling, headcount) follows from it.

B2B, B2C, and B2G: sales types by who buys

Sales split first by buyer. B2B sells to other businesses and centers on logistics, ROI, and relationships. B2C sells to individuals and runs on brand, price, and emotion. B2G sells to government and runs on procurement rules and compliance. The buyer sets the tempo more than the product does, so this is the axis to name first.

B2B deals are slower and larger. A B2B service contract can take months and involve three to five stakeholders, while a B2C purchase can close in five minutes on a phone. For service businesses, this is almost always your world. If you run a consultancy, agency, or professional practice, you are selling B2B, and the rest of this guide weights toward you. Our definition of modern B2B sales goes deeper on the buyer psychology.

B2C is a different animal. It rewards conversion-rate work, retargeting, and offer design over relationship selling. If you sell to consumers, your leverage sits in the funnel, not the rep. B2G sits at the far end: long RFP cycles, set-aside programs, and paperwork that can take a year to clear. Few service founders start there, but government contracts can anchor a business once you have the compliance stomach for it.

Inside vs outside sales: types by where selling happens

Inside sales happens remotely, by phone, email, video, and chat, with reps at a desk. Outside (field) sales happens in person, with reps traveling to prospects. Inside sales now dominates because video closes deals that once required a flight, and it costs a fraction of field selling. Outside sales survives where deals are large, regional, or relationship-heavy enough to justify the travel.

For most service businesses the answer is inside, full stop. A remote rep on Zoom can run five discovery calls in the time a field rep runs one, and buyers stopped expecting the on-site visit years ago. Field sales still earns its keep in construction, medical devices, and enterprise deals where a handshake and a site walk move the number. According to the shift documented in our B2B sales statistics, remote and hybrid selling is now the default motion, not the exception.

The practical read: build inside first. It is cheaper to staff, easier to measure, and faster to iterate. Add field capacity only when a specific deal segment demands it and the math on travel cost against close rate actually works.

Transactional vs enterprise (complex) sales: types by motion

Transactional sales close fast on low-risk, low-price buys, often in a single call with one decision-maker. Enterprise or complex sales close slowly on high-value deals with multiple stakeholders, formal procurement, and a cycle of three to twelve months. The motion, not the logo, decides how you staff and comp the deal. Confusing the two is the most expensive mistake I see founders make.

Transactional selling wants volume, speed, and a tight script. You optimize for calls per day and a clean handoff. Enterprise selling wants patience, a champion inside the account, and a rep who can map a buying committee. You optimize for pipeline coverage and deal quality, not activity count. Run an enterprise motion on a transactional comp plan and your best reps quit; run a transactional motion on an enterprise plan and you bleed margin on deals that should self-serve.

Here is a concrete worked example from a consultancy I advised. They sold a $4K/month retainer and a $60K annual transformation program with the same two reps, the same one-call-close script, and the same comp. The $4K deals closed. The $60K deals stalled, because a six-figure buy needs three touches, a proposal, and a second stakeholder, not a hard close on call one. We split the motions: one rep on transactional retainers with a volume quota, one rep on enterprise programs with a longer cycle and a coverage target. Enterprise close rate went from 9% to 22% in two quarters, and the retainer rep doubled call volume. Same people, right motion.

Channel and self-service sales: types that scale without more reps

Channel sales sell through partners, resellers, or referral sources instead of your own reps. Self-service sales let the buyer purchase on their own, with no rep in the loop. Both types of sales trade control for leverage: you give up some margin or some hand-holding in exchange for reach you could never staff directly. For service businesses, channel is usually the bigger prize.

Channel sales for a service business often means referral partners, not classic resellers. An accountant who sends you every client that needs marketing is a channel. So is an agency that white-labels your fractional CMO service. You build the partner relationship once and it produces deals for years, which is why compounding referral systems beat one-off lead buys. Our compounding lead generation guide maps how to build these.

Self-service works when the offer is simple and the price is low enough that a buyer will click Buy without a call. Productized services, templates, and low-ticket courses fit here. It rarely works for a $50K engagement, because trust at that price requires a human. Use self-service to monetize the top of your funnel, not to replace your closing motion.

Which type of sales should your business staff first?

Staff the motion your primary offer demands, and only that one, until it works. For most 7-figure service businesses, that is B2B inside sales running an enterprise-lite motion. Add a second type only when the first is repeatable and you can name why the second earns its cost. Founders who staff four motions at once end up doing none of them well.

1. Name your row. Place your primary offer across buyer, location, and motion axes using the table above.
2. Match comp to motion. Volume plans for transactional, coverage and cycle-based plans for enterprise. Never share one plan across both.
3. Build inside before outside. Prove the remote motion first; add field only where a segment’s math demands it.
4. Add channel once you can close. Referral partners multiply a motion that already converts. They cannot fix one that does not.
5. Use self-service for the low end. Let small, simple buys close themselves so reps focus on deals that need a human.

If you are staring at this list unsure which row is yours, that is the exact problem a diagnostic solves. Book a consultation and we will map your sales motion in one call, or start with our modern B2B sales process guide to build the motion yourself.

Frequently asked questions

What are the main types of sales?

The main types of sales sort across three axes. By buyer: B2B, B2C, and B2G. By location: inside (remote) and outside (field). By motion: transactional, enterprise (complex), channel, and self-service. A single deal usually carries several labels at once, such as a B2B enterprise deal run by an inside rep. Naming all three axes for your offer is what makes the taxonomy useful.

What is the difference between B2B and B2C sales?

B2B sales target other businesses and run on logistics, ROI, and long-term relationships, with cycles of weeks to months and deals from thousands to hundreds of thousands of dollars. B2C sales target individual consumers and run on brand, price, and emotion, often closing in minutes. B2B rewards relationship selling and account mapping; B2C rewards funnel design, offer, and conversion-rate work at the top.

What is the most common type of sales for service businesses?

B2B inside sales is the most common and usually the right first choice for service businesses. It sells to other businesses remotely by video, phone, and email, which is cheaper and faster to staff than field selling. Most service offers, from consulting retainers to agency contracts, close well over video, so building an inside motion first gives founders the fastest path to a repeatable pipeline.

What is enterprise or complex sales?

Enterprise sales, also called complex sales, are high-value B2B deals, often $50K and up, involving multiple stakeholders, formal procurement, and cycles of three to twelve months. They need a rep who can map a buying committee, cultivate an internal champion, and manage a longer pipeline. Comp should reward coverage and deal quality, not call volume, because activity metrics that suit transactional selling can push reps to force deals that need patience.

Can a business use more than one type of sales?

Yes, and most growing businesses eventually do. A service firm might run inside B2B enterprise sales as its core motion, add channel sales through referral partners, and use self-service for low-ticket products. The rule is sequencing: prove one motion works and is repeatable before adding a second, and match compensation to each motion separately. Stacking multiple motions before the first one converts is a common way founders stall growth.