How to Choose a Partner for SharePoint Development Services: 10 Due-Diligence Checks

A Decision That Impacts Your Overall Enterprise Governance

SharePoint underpins productivity for more than 200 million users across 200,000 organisations worldwide, according to Microsoft’s own reported figures. Yet a significant proportion of enterprise SharePoint development projects run over budget, miss deadlines, or are quietly abandoned; not because the platform is inadequate, but because the wrong partner was engaged.

Knowing how to choose a SharePoint development partner is, at its core, a governance competency; one that directly determines whether your investment delivers measurable business value or generates a remediation backlog.

This guide gives you a practical, 10-point due-diligence framework to evaluate any SharePoint development company before you sign a contract. It is written for CIOs, IT directors, procurement officers, and compliance leaders, people who need clarity, not vendor marketing copy.

Industry context: McKinsey research on large IT projects consistently shows that roughly 17% of large-scale IT programmes turn so negative in value that they threaten the company’s existence. SharePoint implementations are not immune. The single most correlated factor with success or failure is partner capability, not project scope.

Before You Sign: 10 Enterprise-Grade Due-Diligence Checks for SharePoint Partner Selection

✅Check 1: Verify Microsoft Partner Network Credentials and Specialisations

Microsoft’s Partner Network (MPN) is the official credentialing system for organizations delivering Microsoft technologies. For SharePoint, the most relevant designation is Solutions Partner for Modern Work. This is the current standard, which replaced the legacy Gold and Silver competency model.

For specialized workloads, you should also look for the Microsoft Specialisation in Adoption and Change Management or Calling for Microsoft Teams.

What Microsoft Designations Actually Signal

A Solutions Partner for Modern Work designation requires the vendor to demonstrate verified customer success stories, maintain a minimum threshold of Microsoft-certified employees, and adhere to Microsoft’s partner code of conduct. It is not self-reported; Microsoft independently verifies the data.

You can validate any partner’s current designation directly at partner.microsoft.com/en-US/partnership/find-a-partner. Do this. Do not accept a logo on a website as verification because designations lapse, and some vendors continue to display expired credentials.

• Require the vendor to provide their MPN Partner ID.
• Cross-verify at Microsoft’s official Partner Finder before shortlisting.
• Ask specifically which certifications their senior SharePoint architects hold — Microsoft Certified: SharePoint Server Hybrid is a role-specific credential worth requesting.

✅Check 2: Examine the Depth of SharePoint Online and Microsoft 365 Expertise

SharePoint 2013 experience is not SharePoint Online experience. The platform has undergone fundamental architectural changes across its cloud incarnation, and a vendor whose portfolio is weighted toward on-premises deployments or classic SharePoint will struggle with the modern SharePoint framework (SPFx), Viva Connections, Microsoft Teams integration, and the Microsoft Power Platform connectors that enterprise organisations now routinely require.

Beyond SharePoint Classic: Evaluating Power Platform, Teams, and Viva Integration Skills

Modern enterprise SharePoint programmes rarely exist in isolation. They intersect with Power Automate workflows, Power Apps custom forms, Microsoft Teams channel integrations, and increasingly, Microsoft Copilot for Microsoft 365 AI capabilities. A partner who cannot demonstrate live delivery experience across this stack will require you to engage additional vendors, creating coordination overhead that compounds delivery risk.

Ask for specific examples of: SPFx web part and extension development, Power Automate flows connected to SharePoint lists, SharePoint-based intranet deployments using Viva Connections, and any Microsoft Copilot or AI Builder integrations.

If the vendor cannot reference live production examples for each area, treat that as a capability limitation rather than an automatic disqualifier, but factor it carefully into scope planning and risk assessment discussions.

✅Check 3: Audit Their Enterprise Portfolio Specifically, Not Generally

Case studies are vendor marketing. They are not neutral evidence. Approach portfolio review as a primary research exercise rather than a reading exercise.

How to Read a Vendor’s Case Studies for Actual Delivery Evidence

A credible enterprise SharePoint development case study will include: 

• The client organization’s industry and approximate size (number of users or revenue range)
• The specific SharePoint workloads delivered (intranet, document management, extranet, workflow automation, governance frameworks)
• The delivery timeline and how it compared to the original and initial estimate
• A quantified outcome, such as reduced document retrieval time, improved adoption rate, compliance audit results, or measurable productivity gains

If a case study says only ‘we delivered a SharePoint intranet for a financial services client in six months‘, that tells you nothing useful. Push for the project manager’s name, the approximate user count, and permission to contact the client directly. A reputable vendor will facilitate this. A vendor who resists it is telling you something.

So, make sure to:

• Request at least three enterprise case studies from organisations of 500+ employees.
• Ask for at least one case study in your industry or a closely adjacent sector.
• Request delivery timeline actuals versus original estimates.

✅Check 4: Probe Their Project Delivery Methodology and Governance Model

One of the most underappreciated factors when figuring out how to choose a SharePoint development partner is delivery methodology. It is not a formality question. How a vendor structures discovery, sprint cycles, review gates, and change control directly determines whether your project will surface problems early or accumulate them unnoticed until they become operational crises.

Methodology defines governance discipline.

Agile vs. Waterfall vs. Hybrid: What Fits Enterprise SharePoint Programmes

Pure waterfall delivery is a liability in SharePoint projects where Microsoft releases platform updates on a monthly cadence. A partner locked into a requirements-freeze-to-release cycle will deliver something already partially obsolete. Equally, a vendor using undisciplined agile, with no sprint reviews, no documented acceptance criteria, and no release notes, creates governance problems for regulated industries.

For most enterprise SharePoint programmes, the appropriate model is structured agile, which includes:

• Two-week sprint cycles
• A documented backlog with the business owner sign-off
• Clearly defined acceptance criteria
• Formal sprint reviews and demo sessions
• A controlled and defined change management process for scope additions
• Release governance aligned with your internal IT change management board

Ask the vendor to walk you through how they would handle a scope change request mid-project. Who approves it? How is it documented? How does it affect cost and timeline? How is stakeholder alignment maintained? The quality and specificity of that response will tell you everything you need to know.

✅Check 5: Assess Security, Compliance, and Data Residency Posture

For regulated industries such as financial services, healthcare, legal, and the public sector, this check is not optional. It should take place before commercial negotiations begin, not after contracts are drafted.

The Compliance Questions Your Legal Team Will Ask: Answer Them Before They Do

Your procurement process should require the vendor to provide: 

• A current ISO 27001 certificate or an equivalent SOC 2 Type II report
• A signed data processing agreement (DPA) specifying how they handle access to your Microsoft 365 tenant data during development
• Documentation of their access control policies for offshore team members
• Written confirmation that any production data access occurs only within contractually specified geographic regions

Microsoft has made significant commitments regarding the EU Data Boundary, ensuring that data for EU-based customers remains within the European Union. Your SharePoint development partner must operate within these constraints. 

This means their developers, particularly offshore team members, should access your environments only through appropriately configured and auditable channels. Ask specifically whether they use Azure Virtual Desktop or comparable solutions to control where data is viewed and processed.

Do not accept general assurances. Ask for architectural specifics. 

Before you shortlist a vendor:

• Require ISO 27001 or SOC 2 Type II documentation as a baseline requirement.
• Confirm data processing agreements are in place before any tenant access is granted.
• Verify their sub-processor chain. Seek answers to questions like who do they subcontract delivery to, and does that chain meet your compliance requirements?

✅Check 6: Evaluate Team Structure, Continuity, and Key-Person Risk

This check is consistently underweighted in enterprise vendor evaluations and consistently cited in project post-mortems as a significant failure factor. You are not hiring a brand name or a company.  You are hiring specific people, like architects, developers, and project leads, who will work on your project and will make daily decisions inside your Microsoft 365 environment.

The gap between the company you sign and the individuals who execute the work is where delivery risk lives.

Offshore and Nearshore Models: What to Demand Contractually

Offshore delivery models offer genuine cost advantages and access to deep SharePoint talent pools, particularly in India, where Microsoft has invested heavily in partner development. The risk is not offshore delivery per se; it is unmanaged offshore delivery. The critical variables are: dedicated versus shared team allocation, time-zone overlap windows, communication protocols, and what happens when a key technical resource leaves the vendor mid-project.

Without contractual clarity, these become assumptions. Assumptions can create exposure.

Contractual protections you should negotiate: 

• A minimum dedicated team commitment (not “best efforts”)
• A named resource schedule with agreed substitution notice periods (typically 30 days)
• An IP and knowledge transfer clause ensuring your project documentation, code repositories, and architectural decisions remain accessible to you regardless of team changes
• Continuous access to shared repositories such as Azure DevOps or GitHub throughout the engagement, not only at project handover

In enterprise SharePoint engagements, continuity is a governance control.

If the vendor’s operating model depends heavily on a single architect or senior developer, you are assuming key-person risk. Mature partners build redundancy into delivery teams and document decisions in a way that survives personnel change.

Evaluate the team, not just the logo.

✅Check 7: Scrutinise Commercial Terms, IP Ownership, and Contract Protections

The default commercial terms of many SharePoint development vendors, particularly mid-market and offshore providers, are written or structured to protect the vendor first, not the client. Enterprise procurement teams often negotiate these agreements without specialist IT contract counsel, which creates unnecessary exposure. Knowing how to choose a SharePoint development partner means knowing which contract clauses to insist on and which defaults to reject.

Standard Clauses That Protect Enterprise Clients in Long-Term SharePoint Engagements

1. Intellectual Property Ownership

Custom code, SPFx components, Power Automate flows, integrations, scripts, documentation, and any bespoke solutions developed for your organisation should transfer to you upon payment.

Confirm this explicitly in writing.

Some vendors retain rights to so-called ‘reusable components’. That definition can be broad enough to include substantial portions of your solution. Clarify:

• What constitutes reusable intellectual property
• What is exclusively assigned to your organisation
• Whether the vendor can reuse modified versions of your solution elsewhere

Ambiguity here creates downstream dependency.

2. Source Code Escrow

For projects above a defined commercial threshold (commonly £100,000 or $120,000 and above) require a source code escrow arrangement.

This ensures that access to your codebase is not contingent on the vendor’s financial stability, acquisition, restructuring, or insolvency.

Escrow provisions should clearly define:

• Trigger events for release
• Frequency of code deposit updates
• Verification rights

Business continuity should not depend on vendor continuity.

3. Service Credits and Termination Rights

Service level agreement breaches must have enforceable remedies.

Appropriate protections include:

• Financial service credits for missed SLAs
• Defined cure periods
• Step-in rights where you can assume operational control in critical situations
• Termination for repeated material breach

Avoid contracts where the vendor’s sole obligation in the event of SLA breach is to “use reasonable endeavours” to remediate. That language is weak and difficult to enforce in practice.

✅Check 8: Test Their Post-Go-Live Support and Managed Services Capability

SharePoint is a living platform. Microsoft releases feature updates monthly through the Microsoft 365 roadmap, and the platform’s dependencies, such as Exchange Online, Teams, Viva, and the Power Platform, evolve on their own cadences. An enterprise SharePoint deployment without an engaged and capable support partner becomes a diminishing asset over time.

SLA Benchmarks for Enterprise SharePoint Support in 2026

For enterprise SharePoint environments, reasonable SLA benchmarks are: 

These are not aspirational targets. They are the baseline for a credible enterprise support offering. Any vendor quoting significantly looser SLAs for P1 incidents should be asked to justify the variance. Ask specifically whether support is provided by the same team that built the solution or by a separate operations function with no project context.

✅Check 9: Demand Reference Clients in Your Industry or Comparable Scale

References are the highest-quality signal available in vendor evaluation, and they are systematically underused. Most procurement teams ask for references and then send a brief email that generates a positive but uninformative response. That process has little diagnostic value.

The Three Questions to Ask Every Reference Client

Speak to references by phone or video. Ask specifically:

(1) Did the vendor deliver the agreed scope within the agreed timeline, and if not, what caused the variance, and how did they manage it? 

(2) How did the vendor handle a significant problem or dispute during the engagement?  Describe a specific incident.

(3) Would you engage this vendor again for a comparable project today, and would you recommend them to an organisation in your industry with similar compliance requirements?

The third question is the most diagnostic. Positive generalities are easy to give; a specific, unqualified recommendation in the context of your industry is harder to fabricate. If a reference client pauses before answering the third question or qualifies their recommendation significantly, weight that signal heavily.

✅Check 10: Conduct a Technical Discovery Session Before Signing

A paid technical discovery engagement, typically lasting two to four weeks and covering requirements definition, architectural review, integration assessment, and migration complexity analysis, is the most reliable predictor of successful project delivery. It also reveals the vendor’s actual working methodology under conditions closer to real project dynamics than any sales presentation can.

What a Credible Discovery Session Looks Like and the Red Flags That Should Stop a Deal

A credible discovery session will produce: 

• A documented Architecture Decision Record (ADR)
• A detailed migration assessment if moving from on-premises SharePoint or another platform
• A risk register with prioritised mitigations
• A refined project estimate with a basis-of-estimate document
• A governance framework recommendation aligned to your organisational structure

Red flags during discovery: the vendor produces only a high-level PowerPoint rather than structured technical documentation; they avoid discussing migration risks or governance complexity; their estimate for the full project does not change substantially based on what they learned in discovery (a fixed estimate regardless of findings suggests they are selling, not assessing); or they assign a sales engineer to lead the discovery rather than a senior SharePoint architect.

A vendor who delivers a rigorous discovery output, including findings you may not want to hear about the complexity of your existing environment, is demonstrating the technical integrity that will sustain a multi-year engagement.

🚩Red Flags: When to Walk Away from a SharePoint Development Partner

Due diligence is as much about disqualification as selection. Any organisation evaluating how to choose a SharePoint development partner must know not just what a good vendor looks like, but when to stop pursuing one entirely.

The following signals, encountered during your evaluation, should prompt serious reconsideration regardless of how competitive the commercial proposal appears:

• Cannot verify MPN credentials independently: Any vendor unable or unwilling to provide their Microsoft Partner ID for independent verification is not operating at an enterprise-grade.
• Proposes a fixed-price contract for an undefined scope: Fixed-price contracts without a completed discovery phase transfer scope risk to the client through change requests. This model consistently produces adversarial project dynamics.
• No dedicated project manager or architect named pre-contract: A vendor who commits delivery resources only after signature is signalling capacity constraints or staff substitution risk.
• Resists reference calls or provides only written testimonials: Written testimonials are curated. Reference calls, conducted by you without vendor supervision, are diagnostic. Resistance to this process is a material signal.
• Cannot produce a current ISO 27001 certificate or SOC 2 report: For any engagement involving access to your Microsoft 365 tenant, this is a non-negotiable threshold for regulated industries.
• No post-go-live support offering or a generic ‘hypercare period’ without SLA commitments: A vendor whose support offer ends at go-live is not aligned to the realities of enterprise platform management.

📑Bringing It All Together: A Scorecard for Your Evaluation Process

For any enterprise team working through how to choose a SharePoint development partner, a structured scorecard removes subjectivity from the final decision. The ten checks outlined above can be weighted and scored to produce a comparative vendor ranking that your evaluation panel can defend internally to procurement, legal, and the board.

Below is a suggested scoring framework. Apply it consistently across every shortlisted SharePoint development company to ensure a true like-for-like comparison.

Due Diligence Check	Weight	Scoring Guidance (1–5)
Check 1: MPN Credentials Verified	12%	5 = Solutions Partner verified; 3 = legacy competency; 1 = unverified
Check 2: SharePoint Online & M365 Depth	12%	5 = Full modern stack demonstrated; 3 = partial; 1 = primarily on-premises
Check 3: Enterprise Portfolio Quality	10%	5 = 3+ enterprise case studies with references; 3 = some evidence; 1 = generic
Check 4: Delivery Methodology	10%	5 = Structured agile with documented change control; 3 = ad hoc; 1 = waterfall-only
Check 5: Security & Compliance Posture	15%	5 = ISO 27001 + DPA provided; 3 = partial documentation; 1 = no evidence
Check 6: Team Structure & Continuity	8%	5 = Named resources, dedicated, contractual substitution terms; 3 = partial; 1 = shared/unspecified
Check 7: Commercial Terms & IP	10%	5 = Full IP assignment, escrow offered, robust SLA credits; 3 = standard; 1 = vendor-biased
Check 8: Post-Go-Live Support SLAs	10%	5 = Defined SLAs meeting enterprise benchmarks; 3 = basic support; 1 = no formal support
Check 9: Reference Quality	8%	5 = Direct call, industry-relevant, unqualified recommendation; 3 = written only; 1 = unavailable
Check 10: Discovery Session Quality	5%	5 = Structured ADR + risk register delivered; 3 = adequate; 1 = superficial output

Vendors scoring above 4.0 weighted average across all 10 checks represent a credible enterprise-grade shortlist. Vendors scoring below 3.0 on Check 5 (compliance) should be disqualified, regardless of their aggregate score, if your project involves regulated data.

Conclusion

Understanding how to choose a SharePoint development partner goes beyond comparing proposals and day rates. It requires evaluating governance posture, delivery discipline, compliance alignment, and the specific people who will be assigned to your account. The organisations that apply this level of scrutiny consistently achieve better outcomes, like faster time to value, fewer post-go-live surprises, and a platform that remains fit for purpose as Microsoft’s roadmap evolves.

Apply these 10 checks systematically, document your evaluation panel’s findings, and hold shortlisted vendors to specific, verifiable commitments.

Aufait Technologies has delivered enterprise SharePoint development services for organisations across financial services, healthcare, airline, and manufacturing industries. Our engagements begin with a structured discovery phase, are delivered by named, certified SharePoint architects, and include post-go-live managed services with defined SLAs. If you are in the process of evaluating SharePoint development partners, we welcome a direct conversation with your evaluation panel.

Explore our SharePoint development services, view our enterprise case studies, or contact us to discuss more about your project requirements.

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