Marketplace Web UI Architect

=== MARKETPLACE WEB UI ARCHITECTURE ===

Marketplace
SupplyBridge

Marketplace Type
B2B supplier and wholesale product marketplace

Primary Buyer Conversion
Submit a qualified request for quotation.

Primary Seller Conversion
Complete verification and publish the first approved wholesale listing.

=== EXECUTIVE SUMMARY ===

SupplyBridge should be designed as a search-first B2B marketplace with strong supplier context, structured wholesale attributes, transparent transaction types, and persistent procurement workflows.

The primary buyer experience should help procurement teams:

1. Search products and suppliers.
2. Filter by minimum order, lead time, location, and verified capabilities.
3. Compare compatible listings.
4. Review supplier profiles.
5. Save products to procurement lists.
6. Submit structured quote requests.
7. Manage supplier responses.

The primary seller experience should help suppliers:

1. Complete progressive verification.
2. Create a supplier profile.
3. Publish complete wholesale listings.
4. Respond to quote requests.
5. Manage availability and lead-time information.
6. Track messages, orders, reviews, and account tasks.

=== ROLE ARCHITECTURE ===

Guest

• Search
• Filter
• View products
• View supplier profiles
• Compare products
• Save temporary selections

Buyer

• Create procurement lists
• Share approved lists
• Request quotes
• Message suppliers
• Review quotes
• Complete supported purchases
• Review verified transactions

Supplier

• Manage supplier profile
• Complete verification
• Create listings
• Manage availability
• Respond to quotes
• Message buyers
• Manage supported orders
• Review account analytics

Operator Dependencies

• Supplier verification
• Listing moderation
• Certification review
• Dispute review
• Finance operations
• Support

=== INFORMATION ARCHITECTURE ===

Buyer Navigation

• Home
• Categories
• Search
• Suppliers
• Saved Lists
• Comparisons
• Quote Requests
• Messages
• Orders
• Account

Supplier Navigation

• Overview
• Quote Requests
• Listings
• Availability
• Orders
• Messages
• Reviews
• Analytics
• Verification
• Subscription
• Settings

=== HOMEPAGE ===

Hero Heading
Find Wholesale Products and Qualified Suppliers

Hero Search
Search products, suppliers, materials, or categories

Primary CTA
Search Marketplace

Secondary Seller CTA
Sell on SupplyBridge

Primary Sections

1. Search and category discovery
2. Popular wholesale categories
3. Featured verified suppliers, when verified
4. How quote requests work
5. Buyer trust and transaction explanation
6. Seller onboarding value
7. Recently viewed or saved items for returning users
8. FAQ

=== TAXONOMY ===

Category
Packaging

Children

• Food Packaging
• Cosmetic Packaging
• Shipping Boxes
• Glass Containers
• Flexible Packaging

Required Attributes

• Material
• Unit
• Minimum Order
• Customization
• Lead Time
• Shipping Regions

Optional Attributes

• Certification
• Recycled Content
• Printing Options
• Sample Availability

Governance
Category and attribute changes require approved operational ownership.

=== SEARCH ARCHITECTURE ===

Searchable Entities

• Products
• Suppliers
• Categories
• Brands
• Materials
• Exact Identifiers

Autocomplete Groups

• Categories
• Products
• Suppliers
• Recent Searches

Every suggestion displays

• Entity type
• Label
• Supporting context
• Match reason

Search Results
Use separate tabs or clearly labeled groups for Products and Suppliers.

Do not mix supplier profiles and product listings without entity labels.

=== FILTER SYSTEM ===

Primary Filters

• Category
• Supplier Location
• Minimum Order
• Lead Time
• Price Basis
• Supplier Type
• Verification
• Certification
• Private-Label Support
• Customization
• Shipping Region
• Rating
• Review Count

Mobile Pattern
Full-screen filter view.

Mobile Actions

• Clear All
• Show Verified Result Count

Requirements

• Preserve selections.
• Display applied-filter chips.
• Maintain URL state.
• Restore focus after closing.
• Retain filters after visiting a listing.

=== SORTING ===

Options

• Most Relevant
• Minimum Order: Low to High
• Lead Time: Shortest First
• Highest Rated
• Most Reviewed
• Newest Listings

Most Relevant requires a documented ranking model.

=== PRODUCT CARD ===

Include

• Product image
• Product title
• Supplier name
• Supplier location
• Price basis
• Minimum order
• Lead time
• Verification state
• Rating and review count
• Private-label availability
• Save action
• Compare action
• Promoted label when applicable

Avoid

• Unverified scarcity
• Hidden minimum orders
• Price without unit
• Verification badges without definitions

=== SUPPLIER CARD ===

Include

• Supplier name
• Logo
• Primary categories
• Location
• Verified state
• Rating
• Review count
• Minimum-order context
• Private-label support
• Approved certifications
• View Supplier CTA

=== LISTING PAGE ===

Recommended Order

1. Product title
2. Supplier identity
3. Media
4. Price basis
5. Minimum order
6. Lead time
7. Availability
8. Customization options
9. Primary CTA
10. Shipping regions
11. Specifications
12. Certifications
13. Policies
14. Reviews
15. Supplier profile
16. Related listings

Primary CTA
Request a Quote

Secondary Actions

• Save to Procurement List
• Add to Comparison
• Message Supplier

=== PRICE COMMUNICATION ===

Display

• Verified currency
• Price unit
• Minimum order
• Volume-tier context
• Additional fees where verified
• Custom-quote status

Examples
€4.20 per unit
Minimum order: 500 units

or:

Custom Quote
Minimum order: 2 pallets

Do not show an unsupported fixed price for quote-only listings.

=== SUPPLIER PROFILE ===

Sections

• Overview
• Product Catalog
• Capabilities
• Locations
• Shipping Regions
• Customization
• Approved Certifications
• Ratings and Reviews
• Policies
• Contact or Quote CTA

Trust
Each verification and certification label should link to an explanation of what was verified and what was not.

=== REVIEW SYSTEM ===

Display

• Average rating
• Review count
• Rating distribution
• Verified-transaction status
• Product category
• Review date
• Supplier response
• Rating dimensions

Possible Dimensions

• Product Accuracy
• Product Quality
• Communication
• Fulfillment

All dimensions require policy approval.

=== SAVED PROCUREMENT LISTS ===

A saved item preserves

• Listing
• Supplier
• Selected quantity
• Price context
• Availability state
• Buyer note
• Date saved

List Actions

• Rename
• Share with approved team members
• Add to Comparison
• Request Quotes
• Remove
• Export where authorized

Changed State
The price, minimum order, or availability has changed since this item was saved.

=== COMPARISON ===

Eligibility
Only products in compatible categories and price models.

Dimensions

• Supplier
• Location
• Price Basis
• Minimum Order
• Lead Time
• Verification
• Certifications
• Customization
• Shipping
• Reviews
• Policies

Mobile
Use a selected-product switcher and grouped comparison dimensions.

=== QUOTE REQUEST FLOW ===

Step 1:
Buyer Requirement

Fields

• Product
• Quantity
• Specifications
• Customization

Step 2:
Delivery Context

Fields

• Delivery Country or Region
• Target Date
• Shipping Preference

Step 3:
Supporting Information

Fields

• Attachments
• Optional Message
• Preferred Response

Step 4:
Review and Submit

Final CTA
Send Quote Request

Requirements

• Preserve drafts.
• Explain which suppliers receive the request.
• Avoid requesting unnecessary sensitive information.
• Show verified response expectations only.
• Distinguish submitted from viewed or responded.

=== QUOTE STATES ===

• Draft
• Submitted
• Viewed, when supported
• Clarification Requested
• Supplier Responded
• Accepted
• Declined
• Expired
• Withdrawn

Do not invent view or delivery status.

=== SELLER ONBOARDING ===

Step 1:
Create Supplier Account

Step 2:
Choose Supplier Type

Step 3:
Business Verification

Step 4:
Create Supplier Profile

Step 5:
Add Capabilities and Shipping Regions

Step 6:
Add Approved Certifications

Step 7:
Create First Listing

Step 8:
Review and Submit

States

• In Progress
• Verification Pending
• Action Required
• Approved
• Rejected
• Suspended

=== LISTING CREATION ===

Sections

• Category
• Product Title
• Media
• Description
• Specifications
• Materials
• Price Model
• Minimum Order
• Lead Time
• Customization
• Availability
• Shipping
• Policies
• Preview

Requirements

• Category determines required attributes.
• Drafts are preserved.
• Missing information is identified.
• Sellers can preview product cards and listing pages.
• Moderation states remain distinct from technical errors.

=== SELLER DASHBOARD ===

Priority Modules

• New Quote Requests
• Buyer Messages
• Listings Requiring Attention
• Verification Tasks
• Availability Alerts
• Supported Orders
• Payout Issues
• Review Responses

Avoid decorative metrics that do not support seller action.

=== TRUST AND SAFETY ===

Buyer Trust

• Verified supplier states
• Approved certification states
• Transparent fees
• Structured reviews
• Secure messaging
• Reporting
• Dispute guidance

Seller Trust

• Buyer-account state
• Quote context
• Payment status for supported transactions
• Cancellation guidance
• Payout clarity
• Reporting

Do not imply marketplace protection for off-platform transactions unless verified.

=== RESPONSIVE ARCHITECTURE ===

Desktop

• Sidebar filters
• Multi-column result grids
• Full comparison
• Rich supplier dashboards

Tablet

• Collapsed navigation
• Filter drawer
• Reduced card density
• Simplified comparison

Mobile

• Persistent search access
• Full-screen filters
• Decision-focused product cards
• Reachable Quote CTA
• Visible supplier context
• Sequential comparison
• Keyboard-safe messaging
• Urgent seller tasks
• No page-level horizontal scrolling

=== ACCESSIBILITY REQUIREMENTS ===

• Semantic search
• Accessible autocomplete
• Labeled filters
• Dynamic-result announcements
• Clear product-card links
• Alternative text
• Rating semantics
• Price and unit clarity
• Verification text
• Keyboard navigation
• Visible focus
• Dialog and drawer focus management
• Accessible comparison
• Mobile keyboard support
• Zoom and reflow
• Non-color status communication
• Carousel alternatives
• Touch-target review

=== ANALYTICS EVENT MAP ===

Event
search_submitted

Properties

• query_category
• entity_scope
• device_type

Do Not Include
Raw sensitive queries

Event
filter_applied

Properties

• filter_id
• selected_count
• result_count_bucket

Event
listing_viewed

Properties

• category_id
• listing_type
• supplier_verification_state
• source

Event
quote_request_started

Properties

• category_id
• source
• device_type

Event
quote_request_submitted

Properties

• category_id
• quantity_bucket
• attachment_present
• device_type

Event
seller_onboarding_completed

Properties

• seller_type
• verification_path
• device_type

Privacy
Do not include buyer messages, supplier documents, addresses, payment details, quote attachments, certification files, or private business information.

=== EXPERIMENT ROADMAP ===

Experiment 1:
Search-First Homepage

Hypothesis
Prominent product and supplier search will improve qualified marketplace discovery compared with a category-first homepage.

Primary Metric
Search-to-qualified-listing-view rate

Experiment 2:
Supplier Context on Product Cards

Hypothesis
Showing supplier identity, location, and verified state on cards will improve qualified listing engagement.

Primary Metric
Listing-to-quote-start rate

Guardrail
Supplier-profile abandonment

Experiment 3:
Quote-Request Progress

Hypothesis
A four-step structured quote flow will improve qualified completion compared with one long form.

Primary Metric
Qualified quote-request completion

Guardrails
Submission quality
Completion time

Experiment 4:
Saved Procurement Lists

Hypothesis
Project-based saved lists will increase return use and multi-item quote activity.

Primary Metric
Saved-list-to-quote-request rate

=== DEVELOPER HANDOFF ===

Required Components

• MarketplaceHeader
• GlobalSearch
• SearchAutocomplete
• CategoryNavigation
• FilterView
• AppliedFilterChip
• SortControl
• ProductCard
• SupplierCard
• ListingGallery
• PriceDisplay
• VerificationBadge
• RatingSummary
• SupplierProfileHeader
• SavedList
• ComparisonView
• MessagingThread
• QuoteRequestForm
• SellerOnboarding
• ListingEditor
• ListingPreview
• SellerDashboard
• OrderStatus
• PayoutStatus
• ModerationState

Required Data Models

• Buyer
• Supplier
• SupplierMember
• Category
• Listing
• Attribute
• Price
• Availability
• Verification
• Certification
• Review
• SavedList
• Comparison
• QuoteRequest
• Quote
• Message
• Order
• Payment
• Payout
• Dispute

Implementation Rules

• Preserve search and filter state.
• Label entity types.
• Disclose promoted listings.
• Verify every trust claim.
• Show price units.
• Keep seller context visible.
• Distinguish off-platform and marketplace transactions.
• Preserve quote drafts.
• Protect private documents.
• Implement accessible dynamic states.
• Avoid duplicate analytics events.

=== ACCEPTANCE CRITERIA ===

Search Context

Given a buyer applies filters and opens a listing,
when the buyer returns to results,
then the query, filters, sorting, comparison selections, and relevant result position remain available.

Sponsored Disclosure

Given a listing is promoted,
when it appears in search results,
then it is clearly labeled as promoted in a way that is visually and programmatically understandable.

Price Unit

Given a wholesale listing displays a price,
when the buyer reviews the card and listing,
then the currency, price unit, minimum order, and custom-quote status are clear.

Verification

Given a supplier displays a verification state,
when the buyer opens its explanation,
then the interface states what was verified and avoids implying broader approval.

Quote Draft

Given a buyer completes part of a quote request,
when navigation or a recoverable error interrupts the flow,
then entered information remains available according to verified persistence behavior.

Mobile Comparison

Given a buyer compares three products on a narrow mobile viewport,
when reviewing dimensions,
then all compatible product information remains accessible without page-level horizontal scrolling.

=== REGRESSION TEST MATRIX ===

Roles

• Guest
• Buyer
• Buyer Team Member
• Supplier
• Supplier Team Member
• Operator

Listing Types

• Instant Purchase
• Quote Only
• Made to Order
• Private Label
• Unavailable
• Under Review
• Archived

Search States

• Results
• No Exact Match
• Zero Results
• Corrected Query
• Loading
• Error

Quote States

• Draft
• Submitted
• Viewed
• Responded
• Accepted
• Declined
• Expired
• Withdrawn

Responsive

• Small Mobile
• Standard Mobile
• Tablet
• Laptop
• Desktop
• 200% Zoom

Accessibility

• Keyboard
• Screen Reader
• Reduced Motion
• Reflow
• Dynamic Results
• Dialogs
• Filters
• Comparison

=== QA CHECKLIST ===

Discovery

• Verify homepage.
• Verify categories.
• Verify search.
• Verify autocomplete.
• Verify entity labels.
• Verify no-result recovery.

Filters

• Verify values.
• Verify persistence.
• Verify URL state.
• Verify applied chips.
• Verify Clear All.
• Verify mobile behavior.

Cards

• Verify listing type.
• Verify supplier.
• Verify price unit.
• Verify minimum order.
• Verify availability.
• Verify rating count.
• Verify sponsored disclosure.

Listings

• Verify media.
• Verify price.
• Verify availability.
• Verify seller context.
• Verify policies.
• Verify CTA.
• Verify related listings.

Seller Profiles

• Verify identity.
• Verify verification.
• Verify certifications.
• Verify reviews.
• Verify listings.
• Verify contact actions.

Transactions

• Verify quote requests.
• Verify messages.
• Verify cart.
• Verify checkout.
• Verify payment uncertainty.
• Verify confirmation.

Seller

• Verify onboarding.
• Verify drafts.
• Verify listing preview.
• Verify moderation states.
• Verify inventory.
• Verify orders.
• Verify payouts.

Accessibility

• Verify search.
• Verify filters.
• Verify cards.
• Verify ratings.
• Verify dialogs.
• Verify comparison.
• Verify keyboard.
• Verify screen readers.
• Verify zoom and reflow.

=== RISKS ===

Risk
Unverified suppliers appear endorsed by the marketplace.

Mitigation
Use clearly defined verification states and explain their scope.

Risk
Product cards hide minimum-order requirements.

Mitigation
Display minimum order and price unit before listing selection.

Risk
Search mixes supplier and product results.

Mitigation
Group and label entity types.

Risk
Buyer assumes the marketplace protects off-platform transactions.

Mitigation
Explain transaction responsibility and protection scope before action.

Risk
Seller documents are exposed.

Mitigation
Apply role-based access, masking, secure storage, and privacy review.

Risk
Promoted listings appear organic.

Mitigation
Use persistent and accessible promoted labels.

Risk
Mobile comparison becomes unusable.

Mitigation
Use grouped dimensions and selected-product switching.

=== KNOWN LIMITATIONS ===

• Supplier verification requires operational validation.
• Certification validity requires qualified review.
• Search quality requires real data and ranking evaluation.
• Availability and inventory require live-system validation.
• Payments, commissions, and payouts require financial testing.
• Reviews require eligibility and moderation validation.
• Accessibility requires implementation testing.
• Analytics must be implemented and verified.
• Experiment results require sufficient marketplace traffic.
• The architecture does not guarantee liquidity, trust, conversion, revenue, or reduced disputes.

=== FINAL INTEGRITY NOTE ===

All prices, fees, commissions, taxes, shipping terms, availability, fulfillment rules, reviews, ratings, seller verification, guarantees, refunds, cancellations, disputes, payment release, payouts, subscriptions, moderation, legal eligibility, and trust claims must be verified before publication.

The marketplace architecture is designed to improve discovery, trust, comparison, conversion readiness, seller usability, and implementation consistency. It does not guarantee marketplace liquidity, conversion, revenue, seller success, buyer trust, retention, or reduced disputes.