S2K Consulting

What S2K Consulting does

S2K Consulting is a privately-held boutique consulting firm headquartered in Winter Park, Florida that provides AT&T telecom billing audit and optimization services to large organizations in the Southeast United States. Founded in 2007 by Sherry Bellomo after a 30-year career at Southern Bell, BellSouth, T-Mobile, and AT&T, the firm targets three primary verticals: government (cities and counties), education (school districts and universities), and healthcare (hospital districts). The core service is a structured three-step engagement consisting of a free initial audit of transport, long-distance, and other AT&T billing; implementation of savings solutions and carrier negotiations; and fee invoicing tied to a percentage of realized savings.

The firm's product is essentially a manual, expert-led forensic review of complex AT&T invoices, identifying rate errors, unused services still being billed, outdated rates, and unauthorized charges. S2K then negotiates credits and contract corrections directly with AT&T (and, for some Tennessee government clients, NetTN) on behalf of the client. There is no proprietary software platform, API, or AI component; the underlying "technology" is the founder's accumulated domain expertise in AT&T tariff application and billing systems.

S2K operates an inside/enterprise direct-sales motion targeting CFOs and CIOs, supported by a Wix-hosted website with a "Book a Call" CTA and the founder's LinkedIn profile for top-of-funnel awareness. Revenue is generated on an outcome-based contingency basis — the audit is free and fees are invoiced only as a percentage of savings achieved — which aligns firm incentives with client outcomes but produces project-based, lumpy revenue. The firm operates with a lean team (Founder/President and Operations Manager), no institutional funding, and no disclosed parent company, with cumulative disclosed client savings of $30M+ across individual engagements ranging from roughly $200K to $2.6M each.

Name

S2K Consulting

Legal name

S2K Consulting

Website

https://s2kconsulting.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

S2K Consulting is a Winter Park, Florida-based boutique firm that audits AT&T telecom bills for government, education, and healthcare organizations in the Southeast U.S., charging contingency fees on realized savings.

Ownership category

akta.pro rank

Product category

Telecom Expense Management Consulting

NAICS

Management Consulting Services (54161)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Billing & Revenue Operations (Subscription/Usage Billing, Rating, Order-to-Cash Support) (BPAAAGAD)

Keywords

• Telecom billing audit
• AT&T billing optimization
• Telecom expense management
• Billing error recovery
• Carrier invoice audit

Headquarters

HQ city

Winter Park

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Contingency-Based Billing Optimization Fees: S2K Consulting charges fees contingent upon the savings generated for clients. The initial audit is conducted at no cost to the client. Fees are invoiced as a percentage of the savings realized on the telecom bill, aligning company incentives with client outcomes.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

S2K Consulting conducts comprehensive AT&T telecom billing audits and optimization for large organizations. The service involves a free initial audit of transport, long-distance, and other billing to identify rate errors, unused services, outdated rates, and billing discrepancies. They then work with carriers to implement savings and negotiate back credits, charging fees only as a percentage of realized savings.

Product overview

S2K Consulting offers a single, unified consulting service focused on AT&T telecom billing optimization for large organizations. The core offering is a structured three-step process: (1) an Initial Audit that conducts a thorough review of transport, long-distance, and other billing at no cost; (2) Savings Solutions where the firm presents findings and works with carriers to implement cost reductions and negotiate back credits; and (3) Realize Results, where fees are charged as a percentage of savings generated. The service primarily targets government agencies, educational institutions, and healthcare organizations, specializing in uncovering billing errors in complex AT&T telecom accounts.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Over 80% of telecom bills contain errors according to industry data
• +2 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• AT&TcoreTechnology or IntegrationAT&T is the primary carrier that S2K Consulting audits and optimizes billing for. The company's expertise is specifically centered on AT&T billing analysis for large organizations. S2K works with AT&T to implement cost savings, negotiate credits, and resolve billing discrepancies on behalf of their clients.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Tangoe (Rimini Street): Tangoe is one of the largest Telecom Expense Management (TEM) platforms, providing automated telecom audit, optimization, and mobility management for enterprises. Like S2K, it monetizes telecom savings, but at much greater scale and across multiple carriers.
• Calero: Calero is a TEM and usage management provider that helps enterprises audit, optimize, and manage telecom and SaaS spend. Its audit and bill-optimization services overlap directly with S2K's AT&T billing audit offering, with broader carrier coverage.
• RadiusPoint: RadiusPoint provides telecom expense management, utility expense management, and invoice auditing for enterprises. Its telecom audit and optimization services overlap with S2K's core offering while extending into adjacent expense categories.
• Valicom: Valicom is a TEM specialist that audits telecom invoices, identifies billing errors, and recovers overcharges for enterprise and public-sector clients. Its service line is functionally equivalent to S2K's AT&T audit offering and serves overlapping customer types.
• Avatus: Avatus is a boutique telecom expense management and audit firm focused on identifying billing errors and recovering credits for enterprise customers. It is a smaller-scale, services-led peer most directly comparable to S2K's niche.
• MDSL: MDSL provides telecom expense management and telecom lifecycle services globally, including invoice auditing and optimization across carriers. It competes for the same enterprise telecom cost-reduction mandates that S2K pursues, though with a more software-led, multi-carrier model.
• Cimpl: Cimpl is a TEM and technology expense management provider offering telecom invoice auditing and wireless/mobility expense optimization. It targets enterprises with complex telecom environments similar to S2K's government, education, and healthcare base.

Broad incumbents

• BSG (now part of Mavenir): BSG historically operated as a telecom clearinghouse and TEM provider serving large enterprises and carriers with billing, audit, and usage management. It represents a larger incumbent in the same telecom expense management space as S2K.
• TBI (Technology Business Integrators): TBI is a technology services distributor that helps enterprises procure and manage telecom, UCaaS, and connectivity solutions. While broader than S2K, it competes for the same enterprise telecom-spend optimization conversations.

Emerging players

• TCG (Telecom Cost Reduction Group): TCG is a smaller telecom cost-reduction consultancy that audits carrier invoices and recovers overcharges for clients. It is an emerging, services-led peer with a similar audit-driven, contingency-style value proposition to S2K.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/s2kconsulting

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about S2K Consulting