Every B2B sourcing and trade marketplace founder we speak with in late 2026 is doing one of two things with India's Digital Personal Data Protection Act. They are either deferring it entirely, assuming enforcement is still "next year's problem," or they are over-engineering it, assuming that a full compliance programme has to be stood up before anything else moves. Both are wrong. The founders who will come out of 2027 cleanly are the ones who are working through a specific, prioritised list of fixes right now, at a pace calibrated to the platform's actual data exposure, without treating this as either optional or existential.
This piece is that list. Five fixes, in order, specific to B2B sourcing and trade marketplaces. It is written as founder-level operational guidance, not as legal advice. Platforms processing data at scale should engage qualified Indian legal counsel for binding advice on their specific case. What follows is the operational framework the counsel conversation should be built on, not a replacement for it.
Why this matters more for marketplaces than for most Indian businesses
The DPDP Act applies to any entity processing personal data in India. A single-product D2C brand, a professional-services firm, a SaaS platform, and a B2B marketplace are all data fiduciaries under the Act. But the compliance load is not equal across them. A B2B sourcing or trade marketplace has three structural features that make its exposure materially higher than a typical business processing personal data of its own customers.
First, you are processing data on both sides of the market. The buyer's procurement team, their contact details, their bidding history, their payment profile. The vendor's directors, authorised signatories, bank information, verification documents, pricing. Each individual on either side is a data principal under the Act, which means your obligations stack.
Second, the data you hold is commercially sensitive beyond identity. A buyer's enquiry pattern reveals their procurement plans. A vendor's pricing history reveals their margin position. A chat log between the two reveals how a deal was negotiated. If any of that leaks or is misused, the harm is not just privacy harm; it is commercial harm, and the regulatory consequence under the Act is calibrated to severity.
Third, you are frequently cross-border. Even a domestic marketplace often has international buyers browsing, vendors in neighbouring countries, or back-end services routing through data centres outside India. The Act's cross-border transfer rules apply to each of these flows, and the platform is responsible for them even when the technical choice was made by a vendor's cloud provider.
The structural result is that marketplace compliance is not a lighter version of SaaS compliance. It is a materially different and generally heavier version. Founders who scope it by analogy to a product company tend to under-size the work.
Fix 1 · Consent architecture at both buyer and vendor onboarding
The single most expensive thing to retrofit is consent. Every platform's instinct, early in its life, is to collect data broadly ("we might need it later") and worry about the specifics once there is scale. Under the DPDP Act, this is exactly the pattern that becomes most expensive to unwind. Consent must be free, specific, informed, unconditional, unambiguous, and given through clear affirmative action, for each specific purpose the data is used for.
For a B2B sourcing or trade marketplace, this translates into three practical requirements. Consent at onboarding has to name the purposes separately. A single checkbox agreeing to "the terms" does not meet the standard. The platform's processing of personal data for enabling marketplace transactions, for marketing communications, for third-party vendor sharing, and for AI model training (if applicable) are different purposes and each needs its own consent.
Consent has to be as easy to withdraw as it was to give. A buyer who signed up with one click should be able to withdraw consent with one click, inside the platform, without raising a support ticket. Platforms that force a support process for withdrawal are exposed on this specifically.
Consent records must be auditable. If a regulator or a data principal asks, in 2027 or 2028, exactly what consent you have for a specific use of their data, you need to be able to produce the timestamp, the version of the consent language shown, and the specific choices they made. Platforms that treat consent as a single column in the user record cannot answer this question. Platforms that log consent events as immutable records with full context can.
Fixing this early, when the user base is small, is substantially cheaper than fixing it after scale. The retrofit question is not technical; it is legal, because every piece of data collected under non-compliant consent may need to be re-consented or purged.
Fix 2 · Purpose scoping on actual data use
The second common failure is purpose creep. Data was collected for one stated purpose; the business later finds another use for it. Under the DPDP Act, this is not permitted without fresh consent for the new purpose. For marketplaces, the specific risks are concentrated in three areas, and the fix is to tighten each one before enforcement rather than during an investigation.
Cross-side marketing. The platform has buyer contact details from marketplace enquiries. Marketing uses them for seller promotions on the buyer side, or for vendor acquisition outreach. If the original consent did not name these uses, the use is non-compliant. The fix is to either name them in the consent architecture (see Fix 1) or stop using the data this way.
Vendor directory enrichment. The platform scrapes or sources additional data on vendors from public sources and merges it into vendor profiles. If this derived data is treated as personal data, the DPDP Act's requirements apply. The fix is to document what is being enriched, whether it is being treated as personal data under the Act's definitions, and whether the vendor has been informed and given opportunity to object.
AI model training. The platform's AI features are trained on marketplace activity data. If that training uses personal data without purpose-specific consent, the use is non-compliant, and under the Act the remedy may require the model to be retrained on compliant data. This is the single most expensive mistake a marketplace can be making right now. The fix is to decide, deliberately, whether personal data is going into training, and if yes, to secure the specific consent and the retention controls that make it defensible.
Fix 3 · Grievance redressal and the DPO decision
Every data fiduciary under the DPDP Act has to provide a grievance redressal mechanism. Significant Data Fiduciaries, a category the Act allows the government to designate based on volume and sensitivity of data processed, must additionally appoint a Data Protection Officer. For most pre-Series-B marketplaces, the SDF designation is not immediate, but the day you cross the threshold, your obligations change substantially, and most platforms discover this months after the fact.
The founder-level fix is operational, not legal. Build the grievance redressal mechanism now, name a person who owns it, and publish the contact clearly on the platform. The person does not have to be a lawyer. They have to be reachable, empowered to act, and tracked on response times. A marketplace that cannot show a data principal, inside a reasonable period, that their complaint was received, actioned and closed is exposed under the Act whether or not it has crossed the SDF threshold.
The DPO question is strategic. If the marketplace is growing fast and is likely to be designated an SDF within twelve to eighteen months, appointing a DPO early, even in a part-time or fractional capacity, is cheaper than scrambling for one post-designation. The role is specific under the Act: the DPO cannot have conflicting operational responsibilities, must be reachable by data principals, and must be registered with the Data Protection Board. Founders who plan for the designation as a growth milestone, rather than reacting to it, come out of the transition cleanly.
Fix 4 · Verification document handling
B2B marketplaces routinely collect verification documents during onboarding: company registration certificates, GST certificates, PAN cards, Aadhaar cards for authorised signatories, bank statements. Under the DPDP Act, each of these may contain personal data, and some of them (Aadhaar in particular) are subject to additional specific requirements under separate legislation.
The common failure is to collect these documents during onboarding and leave them sitting in the user account record indefinitely. The compliant pattern is different, and three principles govern it.
Minimum necessary. If verification needed Aadhaar at onboarding to confirm identity, the platform does not need to retain the full Aadhaar image six months later. A masked reference and a verification confirmation record are sufficient and significantly reduce exposure. Platforms that store full documents without a retention policy are carrying risk they do not need to be carrying.
Separate storage from the live user record. Verification documents should sit in a separately-controlled store with its own access controls and audit logs, not inline in the user profile. This is as much a security move as a compliance move, and it dramatically limits the blast radius of a breach.
Deletion on account closure. When a user closes their account, verification documents should be deleted in a defined period, not kept indefinitely as "we might need them." Any retention beyond that period requires either a specific legal obligation or fresh consent.
Fix 5 · Cross-border data transfer discipline
The DPDP Act regulates transfer of personal data outside India to countries that the central government may restrict by notification. For a B2B sourcing or trade marketplace, cross-border transfer happens in more places than founders typically realise.
Cloud infrastructure. If any part of your platform's data is processed or stored in a data centre outside India, that is a cross-border transfer. Many Indian marketplaces run on AWS, Google Cloud, or Azure instances configured for cost rather than data residency, and the actual physical location of the data is not always what the founder assumes.
Third-party services. Analytics tools, email services, chat tools, CRM systems, payment processors, each one may be transferring personal data outside India as part of its normal operation. The platform is responsible for each of these transfers under the Act.
International buyers and vendors. If a buyer in Dubai or Singapore signs up on your platform, their data is being collected inside India (your systems) and may be shared with vendors elsewhere. These flows need to be mapped and documented.
The founder-level fix is a data flow map. One document, maintained by someone named, that lists every system in which personal data is processed, where that system physically holds data, and what controls exist for the transfer. Platforms with this map in place can answer compliance questions in minutes. Platforms without it cannot answer them at all until a weeks-long audit builds the map first.
What not to do
Three patterns are common in the Indian marketplace sector right now, and all three are counterproductive.
- Treating DPDP compliance as a one-time project. It is an operating discipline, not a milestone. Platforms that run it as a one-off audit, declare compliance, and move on will fall out of compliance within three to six months as the business changes.
- Hiring external counsel without an internal owner. Counsel can tell you what the law requires. They cannot tell you how your specific platform works. Compliance happens inside the business, with an owner who understands the technical, product and commercial dimensions. External counsel supports that owner; it does not replace them.
- Panicking founders and freezing feature development. The Act is new, it is heavy for marketplaces specifically, and it is a real risk. It is not an emergency, and treating it as one is how platforms burn months of product velocity without actually improving their compliance posture. The fixes above should be sequenced into the operating plan at a pace the business can absorb, not slammed in as a crisis response.
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Related reading on MagicWorks
- The Trust Problem in B2B Sourcing Marketplaces Nobody Talks About · trilogy piece 1 · buyer-side diagnostic companion to this operational compliance piece.
- Three Questions to Answer Before Your First Vendor Call · trilogy piece 2 · vendor-side operational companion. Best read as the three-part set.
- Pre-Launch or Post-Launch? The One Question That Decides If a Platform Roadmap Audit Will Help You · upstream framework. If the compliance fixes above surface a wider roadmap question, this is where to look next.
Swapnil Ughade is the Founder and Managing Director of MagicWorks IT Solutions Pvt. Ltd., an AI-first digital marketing agency based in Pune. Founded in 2009 and now in its seventeenth year, MagicWorks runs its Platform and Marketplace Consultation practice on a strict no-execution discipline: the firm advises, audits, and evaluates vendors for platform businesses across edtech, B2B sourcing, wellness and D2C, but does not build the platforms it advises on. Swapnil leads the practice personally and has 17+ years of experience across digital marketing, web development and AI consultation.
