Annexa
Annexa is a Washington, D.C.-based technology consulting firm that provides data science, cloud enterprise integration, and IT infrastructure services primarily to District of Columbia municipal agencies and selected enterprise clients on a project basis.
- Company typePrivate
- Founded2013
- HeadquartersWashington, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Annexa does
Annexa, Inc. is a Washington, D.C.-based technology consulting firm founded in 2013 that provides professional services across three service lines: Data Science (predictive analytics over structured data to model consumer behavior), Cloud Enterprise Integration (migration, consolidation, and end-to-end enterprise system integration), and IT Infrastructure (mission-critical engineering support). The firm's core technical work centers on system integration — connecting consumer-facing applications with state eligibility systems, federal and state data hubs, and human services enrollment platforms — exemplified by its oversight role on the DC Health Insurance Exchange (DChealthLink.com) and its migration of the DC Public Schools Student Information System serving 50,000+ students.
The company is privately held, founder-led by Patrick Walsh, and operates as a small consultancy with 11–50 employees from a single office at 5335 Wisconsin Avenue NW. Its customer base is concentrated in District of Columbia municipal agencies (DC Health Link, DC Public Schools, DC Office of Unified Communications), with a recent entry into private enterprise work via an Oracle NetSuite OneWorld implementation for ROLLER Software. Annexa generates revenue exclusively through project-based professional services engagements delivered via direct enterprise sales relationships; there is no disclosed recurring revenue, no software product, and no external funding or institutional investors referenced.
Annexa's go-to-market relies on direct engagement with public-sector program management teams (notably inside the Office of the Chief Information Officer) and thought-leadership content marketing through its blog. Distribution is entirely direct sales with no channel partners, no app store presence, and no disclosed pricing beyond custom contract terms. The firm has no patents, no disclosed certifications, and no M&A activity on record.
Annexa firmographics
Firmographics- Name
- Annexa
- Legal name
- Annexa, Inc.
- Website
- https://annexainc.com
- Company type
- Private
- Founded year
- 2013
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Annexa is a Washington, D.C.-based technology consulting firm that provides data science, cloud enterprise integration, and IT infrastructure services primarily to District of Columbia municipal agencies and selected enterprise clients on a project basis.
- Ownership category
- akta.pro rank
Annexa industry classification
Industry- Product category
- IT Consulting Services
- SIC
- Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370), Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Data Platform, BI & Analytics Integration (BPAEAAAI)
- akta.pro secondary industries
- Data Engineering, Integration & ETL/ELT Services (BPAEAHAB), System Integration & Connectors (BPAMAOAC), Augmented Analytics & AI-Assisted BI (NLQ/NLG, Insights) (HDAEAMAD)
Keywords
Where Annexa is headquartered
LocationHeadquarters
- HQ city
- Washington
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Annexa business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Others
Revenue model
- Professional Services and Consulting: Project-based professional services revenue derived from system implementation, integration, and consulting engagements with government agencies and institutional clients. Engagements include requirements documentation, system integration oversight, testing activities (UAT), and business process flow mapping.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Annexa product offering
Product offeringCore offering
Annexa is a professional services consulting firm that delivers three core service areas: Data Science (analytics and predictive modeling to understand and forecast consumer behavior), Cloud Enterprise Integration (migration, consolidation, and end-to-end enterprise solutions), and IT Infrastructure (mission-critical infrastructure engineering and support). The firm primarily serves government agencies and institutional clients in the Washington D.C. region, with engagements spanning health insurance exchanges, student information systems, and public safety communications.
Product overview
Annexa is a technology consulting firm that provides professional services to government agencies and enterprise clients. The company offers three primary service areas: Data Science (advanced analytics and predictive modeling to understand and forecast consumer behavior), Cloud Enterprise Integration (migration, consolidation, and end-to-end enterprise solutions), and IT Infrastructure (mission-critical infrastructure engineering and support). The company also delivers specialized implementation and integration services for government health insurance exchanges, student information systems, and healthcare compliance programs. Annexa is not a software product company; its offerings are professional services engagements rather than packaged software products.
Differentiator
Problem solved
Functional benefit
Products and services
- Data Science Services
- Cloud Enterprise Integration Services
- IT Infrastructure Services
- Health Insurance Exchange System Integration
- Student Information System Implementation
- Oracle NetSuite OneWorld Implementation
Quantifiable outcome
- Successfully enrolled 26,000+ insured individuals through DC Health Insurance Exchange
- +2 more outcomes
Companies that use Annexa
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Annexa technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability2 records
Feature3 records
Annexa partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- DC Health Link / DC Office of the Chief Information Officer (OCIO)coreAnnexa works alongside the program management team within the OCIO to provide seamless interaction between consumers and the health insurance marketplace, state eligibility systems, federal and state data hubs, and Human Services enrollment. Serves as system integration oversight for vendor delivery responsibilities.
- DC Public SchoolscoreAnnexa partners with DC Public Schools to migrate to a new Student Information System, facilitating discussions of operational needs and translating their vision into system requirements for successful rollout.
- DC Office of Unified CommunicationscoreAnnexa is working with DC's Office of Unified Communications to ensure fast and secure radio, wireless, and VOIP communications for public safety personnel.
- InfosysminorAnnexa oversees system integration vendor Infosys to ensure solution delivery responsibilities are met for the DC Health Insurance Exchange project.
Scale indicators2 records
Recent moves5 records
Expansion highlights4 records
Annexa competitors and assessment
Company assessmentDirect peers
- NetSuite Implementation Partners (e.g., Andersen Inc.): Specialized NetSuite consulting and implementation firms that, like Annexa, deliver OneWorld rollouts for mid-market companies expanding internationally — directly comparable on the ROLLER Software use case.
- Slalom: Mid-market technology consulting firm delivering cloud, data, and integration services to government, healthcare, and education clients; comparable in size and service mix to Annexa.
- Infosys Public Services: Global system integrator with a U.S. public services arm that is the named SI vendor on Annexa's DC Health Link engagement; directly comparable on healthcare marketplace and government integration delivery.
Broad incumbents
- Booz Allen Hamilton: Major federal consulting and engineering firm with substantial health IT, civilian agency, and digital modernization practices overlapping Annexa's government system integration focus.
- CGI Federal: U.S. federal subsidiary of CGI Inc., providing systems integration and IT services to civilian and defense agencies including health and citizen-services programs adjacent to Annexa's work.
- ICF International: Large publicly traded consulting and digital services firm with deep federal, state, and local government technology practices, including health and human services implementations directly comparable to Annexa's DC Health Link work.
- Accenture Federal Services: Federal-focused arm of Accenture delivering large-scale system integration, cloud migration, and digital transformation to U.S. government agencies; a prime competitor for the same DC and federal mandates Annexa targets.
- Maximus: Public sector technology and services firm that operates health insurance exchanges and eligibility systems for multiple states, making it a direct analog to Annexa's ACA marketplace integration work.
- Deloitte Government & Public Services: Big Four consulting practice focused on U.S. public sector digital transformation, including health and human services modernization, frequently prime on large integration programs.
Regional players
- Unison Technologies: Mid-sized U.S. federal IT services and system integration firm focused on civilian agencies and health programs; comparable in scale to Annexa and serving adjacent customer segments.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Annexa social profiles
Digital presenceAnnexa financial estimates
Financial estimateRevenue estimate
Valuation estimate
Annexa leadership team
Management profileNumber of profiles
Profiles1 record
Annexa funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Annexa M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Annexa
What does Annexa do?
Annexa is a professional services consulting firm that delivers three core service areas: Data Science (analytics and predictive modeling to understand and forecast consumer behavior), Cloud Enterprise Integration (migration, consolidation, and end-to-end enterprise solutions), and IT Infrastructure (mission-critical infrastructure engineering and support). The firm primarily serves government agencies and institutional clients in the Washington D.C. region, with engagements spanning health insurance exchanges, student information systems, and public safety communications.
Is Annexa a public or private company?
Annexa is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Annexa founded?
Annexa was founded in 2013. It employs 11 to 50 people.
Where is Annexa based?
Annexa is headquartered in Washington, United States, in the North America region.
How does Annexa make money?
One revenue line is on record: professional Services and Consulting.
Who are Annexa's main competitors?
Direct peers on record are NetSuite Implementation Partners (e.g., Andersen Inc.), Slalom and Infosys Public Services. Broad incumbents are Booz Allen Hamilton, CGI Federal, ICF International, Accenture Federal Services, Maximus and Deloitte Government & Public Services. Unison Technologies is listed as a regional player.
Does Annexa have an API?
No public API is recorded for Annexa.
What industry is Annexa in?
Annexa's product category is IT Consulting Services. Its primary akta.pro industry code is BPAEAAAI, Data Platform, BI & Analytics Integration, with a secondary code of BPAEAHAB, Data Engineering, Integration & ETL/ELT Services. Its SIC code is 7373.