Custom extensions, apps & solution architecture: 8 Dynamics 365 partners to consider
Eight Dynamics 365 partners for Custom extensions, apps & solution architecture: COSMO CONSULT, Western Computer, HCLTech, Hitachi Solutions, HSO, Encore…
Product-specific extension engineering, custom applications and technical architecture.
| Agency | HQ | Evidence |
|---|---|---|
| COSMO CONSULT | Berlin, Germany | Technical product documentation |
| Western Computer | Oxnard, California, USA (most often cited); other directories differ | Category-specific service offering |
| HCLTech | Not stated for the practice | Technical product documentation |
| Hitachi Solutions | Tokyo, Japan (most listings); US arm in Irvine, California | Broader product / delivery practice |
| HSO | Amsterdam, Netherlands (most listings); one directory lists Veenendaal | Broader product / delivery practice |
| Encore Business Solutions | Winnipeg, Manitoba, Canada (home office); offices in Seattle and Calgary | Broader product / delivery practice |
| Sikich | Naperville, Illinois, USA (most sources) | Broader product / delivery practice |
| Avanade | Seattle, Washington, USA | Broader product / delivery practice |
Shortlisted
COSMO CONSULT
Business Central integration framework supports structured custom connectivity.
HQBerlin, Germany
Founded1996
Team1,600+ across 52 locations in 20 countries (directory, 2026)
Named clientsNot stated on the pages we checked
Partners & badgesMicrosoft Inner Circle member since 2014 (its description)
Services
What stands out
- Food wholesale solution covers traceability and audit readiness.
- Dynamics delivery with an industry/add-on ecosystem.
- Partner ecosystem includes EDI and Dynamics integration tooling.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Confirm recent comparable delivery and the proposed team.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Technical product documentationFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
Western Computer
Dedicated Dynamics custom-development and integration practice.
HQOxnard, California, USA (most often cited); other directories differ
Founded1987
Team180 to 200+ (company factsheet and directories)
Named clientsNot stated on the pages we checked
Partners & badgesMicrosoft Gold partner and Cloud Solution Provider (its description); owned by a private-equity-backed group since 2023
Services
What stands out
- Dedicated manufacturing-ready ERP implementation offering.
- Supply-chain offering spans purchasing through fulfillment.
- ERP, supply-chain and manufacturing implementation.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Confirm recent comparable delivery and the proposed team.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Category-specific service offeringFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
HCLTech
PowerOneView demonstrates Dynamics customer-engagement extension IP.
Before you choose: Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Product IP supports extension capability; request a comparable custom-client engineering reference.
HQNot stated for the practice
FoundedNot stated for the practice
Team899 Microsoft Business Applications certified professionals (company-reported)
Named clientsNot stated on the pages we checked
Partners & badgesLeader in Everest Group's 2023 Dynamics 365 Services PEAK Matrix (company-reported)
Services
Best at
- Dynamics 365 Finance and Supply Chain, Sales, Customer Service, Field Service and Commerce delivery
- Industry accelerators such as Dynamics 365 for Capital Markets and Insurance
- 899 Microsoft Business Applications certified professionals (company-reported)
Also offers
- Power Platform solutions
- Broader Microsoft cloud and technology services
Source: Technical product documentationFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
Hitachi Solutions
Dynamics ERP and CRM implementation practice.
HQTokyo, Japan (most listings); US arm in Irvine, California
Founded1971 (Built In; entity not specified)
Team768 (Built In) to 3,500+ (company description); scope differs
Named clientsNot stated on the pages we checked
Partners & badges100% Microsoft-platform focus (its description); 2021 Dynamics 365 Field Service Partner of the Year (reported)
Services
What stands out
- Provider documents Dynamics ERP manufacturing rollouts.
- Dynamics ERP and CRM implementation practice.
- Dedicated financial-services Dynamics capabilities.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Current source supports broader practice fit; obtain a category-specific client reference.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Broader product / delivery practiceFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
HSO
Dynamics and Microsoft cloud transformation practice.
HQAmsterdam, Netherlands (most listings); one directory lists Veenendaal
Founded1987 (its own description); 1989 per a 2021 acquisition report
TeamAbout 2,500 to 2,700 (job postings and profiles; older reports say 900+)
Named clientsNot stated on the pages we checked
Partners & badgesMicrosoft-focused integrator; 33+ offices across the Americas, Europe and Asia (its listing)
Services
What stands out
- mfg360 addresses production, warehousing and aftermarket service.
- wholesale360 supports connected distribution and order operations.
- Shopify connector targets Dynamics FO/Commerce architecture.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Current source supports broader practice fit; obtain a category-specific client reference.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Broader product / delivery practiceFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
Encore Business Solutions
Dynamics implementation, integration and support practice.
HQWinnipeg, Manitoba, Canada (home office); offices in Seattle and Calgary
Founded1990
Team150+ (ERPResearch)
Named clients800+ clients across North America (company-reported)
Partners & badges2,300+ Dynamics implementations (company-reported); acquired Fine Solutions
Services
What stands out
- Dynamics implementation, integration and support practice.
- Technical guide documents Business Central–Shopify setup.
- Dedicated Dynamics systems-integration practice.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Current source supports broader practice fit; obtain a category-specific client reference.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Broader product / delivery practiceFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
Sikich
Manufacturing and distribution-oriented Dynamics practice.
HQNaperville, Illinois, USA (most sources)
Founded1982
TeamAbout 1,800 to 2,000 (directories)
Named clientsNot stated on the pages we checked
Partners & badgesMicrosoft Inner Circle partner (directory); acquired PA Group USA in 2021
Services
What stands out
- Manufacturing and distribution-oriented Dynamics practice.
- Food retailer case covers Finance and SCM transformation.
- Distribution guidance describes incorporating EDI into Dynamics.
Research before choosing
- Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Current source supports broader practice fit; obtain a category-specific client reference.
- Confirm the regional delivery entity, named consultants and current Microsoft credentials.
- Request a comparable client reference and confirm the delivery team
Source: Broader product / delivery practiceFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
Shortlisted
Avanade
Full-stack Dynamics implementation and support.
Before you choose: Correct engineering stack; AL, X++ and Dataverse skills are not interchangeable. Current source supports broader practice fit; obtain a category-specific client reference.
HQSeattle, Washington, USA
Founded2000 (formed as an Accenture and Microsoft joint venture; Accenture later took control)
Team50,000 to 80,000 depending on the source and year
Named clientsNot stated on the pages we checked
Partners & badgesMicrosoft-focused services firm, majority-owned by Accenture
Services
Best at
- Dynamics 365 Finance, Supply Chain, Project Operations, Sales and Service delivery (published coverage)
- Power Platform solutions
- Microsoft-only focus since its 2000 founding as an Accenture and Microsoft venture
Also offers
- Wider Microsoft cloud transformation work
- Large-scale programmes delivered across 26 countries (company-reported)
Source: Broader product / delivery practiceFacts from the company’s own website and public sources, checked 23 October 2026. Not a ranking.
How this shortlist was made: partners were assessed on category-specific evidence, based on public sources, mainly provider sources. A service page establishes a capability claim, not independently verified delivery quality. Team quality and comparable client references still need checking before selection. Reviewed 23 October 2026. The order is not a ranking. See How We Choose.
How to choose
- Ask for a reference with the same scope, and the same platform version where it applies.
- Confirm who will deliver the work and where they are based.
- Agree what is in scope: setup, integration, training and ongoing support.
- Check the partner's current Microsoft partner profile and credentials, then read the evidence link on its card.
Related categories
Business Central implementation & NAV/GP modernizationFinance/SCM implementation & AX modernizationSales/Service implementation & CRM migrationData migration, master data & governanceALM, release testing & test automationCopilot, AI agents & intelligent automationManaged Dynamics administration & supportAll Dynamics 365 services
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