How to Build a Marketplace App: Features, Cost and Launch Roadmap - GDM

Introduction

A marketplace app is not simply an app where people buy and sell products—it is a digital system that has to make buyers, sellers, payments, trust, and transactions work together.

From product marketplaces and service platforms to rental, food, real-estate, B2B, and hyperlocal marketplaces, the basic opportunity is similar: connect two or more groups that need each other and make the transaction easier.

For Indian businesses, the opportunity is particularly interesting. The India Brand Equity Foundation reports that India’s e-commerce market was valued at about US147.3billioninFY2024andprojectsittoreachapproximatelyUS363.3 billion by 2030.

But building a marketplace app requires more than copying the visible features of Amazon, Airbnb, Urban Company, or another large platform.

You need to answer questions such as:

Who are the buyers?
Who are the sellers or service providers?
How will both sides discover the platform?
How will payments and seller payouts work?
How will disputes and refunds be handled?
How will you prevent fake listings and fraudulent users?
How will the marketplace make money?
Which features should be included in version one?

This guide explains how to approach marketplace app development from idea to launch.

The Problem: Why Marketplace Apps Are Difficult to Build

A normal business app may primarily serve one user group.

A marketplace app usually has at least two sides:

Buyer → Marketplace → Seller

In many models, there are additional participants:

Buyer → Marketplace → Seller → Delivery Partner

plus:

Admin → Payments → Support → Verification → Analytics

This creates additional product, technical, operational, and compliance requirements.

Key Insight: The hardest part of a marketplace isn’t creating the app interface. It’s designing the system that reliably connects supply with demand.

What This Guide Promises

By the end of this article, you will understand:

How marketplace apps work
Which features belong in the MVP
Which features can wait until later
How much marketplace app development can cost in India
How to choose a technology stack
How marketplace payments and payouts work
How to plan your launch
How to monetize the platform
What mistakes to avoid

What Is a Marketplace App?

A marketplace app is a digital platform that connects buyers with independent sellers, service providers, vendors, professionals, or other users.

Unlike a traditional e-commerce app where one company may own the inventory, a marketplace generally facilitates transactions between third parties.

Examples of marketplace categories include:

Product marketplaces
Service marketplaces
Rental marketplaces
Food marketplaces
Real-estate marketplaces
B2B marketplaces
Freelance marketplaces
Job marketplaces
Used-goods marketplaces
Hyperlocal marketplaces

The marketplace operator usually makes money by charging commissions, listing fees, subscriptions, advertising fees, transaction fees, or a combination of these models.

Stripe describes a marketplace as a platform that facilitates buying and selling between multiple third-party sellers and buyers.

Types of Marketplace Apps

1. Product Marketplace

Examples include platforms where multiple vendors sell physical products.

Typical features include:

Product listings
Categories
Search
Cart
Checkout
Seller dashboard
Order management
Reviews
Delivery tracking

2. Service Marketplace

This model connects customers with professionals.

Examples include:

Home services
Tutors
Fitness trainers
Consultants
Freelancers
Repair professionals

Important features include:

Service profiles
Availability
Booking
Location
Reviews
Messaging
Payments

3. Rental Marketplace

Users rent products, vehicles, properties, equipment, or other assets.

Useful features include:

Availability calendars
Booking
Deposits
Identity verification
Rental agreements
Damage reporting
Reviews

4. B2B Marketplace

A B2B marketplace connects businesses with suppliers or other businesses.

Features can include:

Bulk ordering
RFQs
Vendor verification
Negotiation
Business profiles
Invoices
Purchase orders
Credit terms

How a Marketplace App Works

A typical marketplace transaction looks like this:

Step 1: Seller Registration

A seller creates an account and submits business or personal information.

Step 2: Verification

The platform verifies the seller where required.

Step 3: Listing Creation

The seller adds products or services.

Step 4: Buyer Discovery

Customers search, filter, compare, and select listings.

Step 5: Order or Booking

The customer places an order or makes a booking.

Step 6: Payment

The marketplace processes the transaction.

Step 7: Fulfilment

The seller provides the product or service.

Step 8: Platform Fee

The marketplace calculates its commission or other fees.

Step 9: Seller Payout

The seller receives the applicable amount.

Step 10: Review

The customer can rate the seller, product, or service.

Marketplace Transaction Flow

Seller

↓

Registration

↓

Verification

↓

Create Listing

↓

Marketplace Database

↓

Buyer Search

↓

Product / Service Selection

↓

Order / Booking

↓

Payment

↓

Marketplace Commission

↓

Seller Payout

↓

Delivery / Service

↓

Review & Rating

Must-Have Marketplace App Features

A successful marketplace should not try to launch with every possible feature.

Start with the features required to complete the core transaction loop.

Buyer Features

User Registration & Login

Support:

Email login
Mobile number
OTP
Social login where appropriate

Keep onboarding short.

User Profile

Customers should be able to manage:

Name
Contact information
Addresses
Profile photo
Preferences
Order history
Saved items

Search & Filters

Search is critical when the marketplace has many listings.

Useful filters include:

Category
Price
Location
Rating
Availability
Seller
Delivery time
Product attributes

Product or Service Details

A listing page should clearly communicate:

Photos
Title
Description
Price
Availability
Seller information
Reviews
Policies
Delivery or service details

Cart

For product marketplaces, include:

Add to cart
Quantity
Remove item
Save for later
Price calculation
Delivery charges

Booking

For service marketplaces, booking may replace the traditional shopping cart.

It can include:

Date
Time
Duration
Location
Service option
Price
Confirmation

Payments

Depending on your business model and geography, payment options may include:

Cards
Bank transfers
Wallets
UPI
Digital payment methods
Cash-on-delivery where applicable

Orders & Bookings

Users need a simple way to see:

Pending orders
Confirmed orders
Shipped orders
Completed orders
Cancelled orders
Refunds

Reviews & Ratings

Reviews help create trust between strangers.

Allow users to rate:

Seller
Product
Service
Delivery experience

Seller Features

The seller experience is just as important as the buyer experience.

Seller Registration

Collect only the information necessary for onboarding and verification.

Depending on the business model, this can include:

Name
Business details
Contact information
Bank details
Tax information
Identity verification

Seller Dashboard

A seller dashboard can show:

Sales
Orders
Revenue
Pending payouts
Product performance
Customer reviews
Notifications

Listing Management

Sellers should be able to:

Add listings
Edit listings
Upload images
Set prices
Manage inventory
Update availability
Pause listings

Order Management

Sellers need tools for:

Accepting orders
Processing orders
Updating status
Cancelling orders
Managing returns
Communicating with buyers

Payout Management

Marketplace sellers need visibility into:

Total earnings
Platform fees
Refunds
Pending payouts
Completed payouts

Payment infrastructure becomes more complex when a platform must onboard sellers, split transactions, calculate fees, manage refunds, and make payouts.

Admin Panel Features

The admin panel is the control centre of your marketplace.

Essential functions include:

User management
Seller management
Listing approval
Category management
Order management
Payment monitoring
Commission management
Refund management
Review moderation
Coupon management
Reports
Analytics
Support tickets
Notifications
Fraud monitoring

Why the Admin Panel Matters

Many startups focus heavily on the customer-facing app and underestimate administration.

That can create operational problems after launch.

A strong admin panel lets your team manage the marketplace without manually changing database records or relying on developers for every small task.

Advanced Marketplace App Features

Once your MVP has traction, consider advanced functionality.

AI-Powered Search

AI can help users discover relevant products or services using natural-language queries.

For example:

“Find affordable wedding photographers within 20 km who are available next Saturday.”

Personalized Recommendations

Use customer behaviour to recommend:

Products
Services
Sellers
Categories
Promotions

Real-Time Chat

Buyer-seller messaging can reduce friction before purchase.

Push Notifications

Send notifications for:

Order updates
Booking confirmations
Price changes
New messages
Promotions
Seller alerts

Location-Based Discovery

Useful for:

Food
Home services
Rentals
Local shops
Delivery
Real estate

Fraud Detection

Monitor unusual activity such as:

Multiple suspicious accounts
Abnormal transactions
Fake reviews
Repeated cancellations
Suspicious payment patterns

Loyalty & Referral Programs

You can introduce:

Referral rewards
Loyalty points
Memberships
Cashback
Seller incentives

Callout: Don’t Build Everything on Day One

Your first marketplace app should prove one important hypothesis: Can your platform reliably create successful transactions between buyers and sellers?

Everything that doesn’t directly support that goal can be evaluated for a later release.

Key Facts & Statistics

Marketplace & E-Commerce Snapshot

India’s e-commerce market: Approximately US$147.3 billion in FY2024.
Projected Indian e-commerce market: Approximately US$363.3 billion by 2030.
Marketplace payment complexity: Marketplaces must manage seller onboarding, transaction routing, platform fees, payouts, refunds, disputes, and compliance.
Third-party marketplace share: Stripe reported that third-party sellers through marketplaces were expected to capture 59% of global e-commerce sales by 2027, up from 56% in 2022.

Sources: IBEF and Stripe.

Marketplace App Development Cost in India

The exact cost depends on the marketplace model, number of platforms, design complexity, integrations, security requirements, and development team.

For planning purposes, a rough 2026 estimate for an India-based development project can be structured as follows:

Marketplace Type	Estimated Cost	Typical Timeline
Basic Marketplace MVP	₹5 lakh–₹9 lakh	10–16 weeks
Standard Marketplace App	₹9 lakh–₹18 lakh	4–7 months
Advanced Marketplace	₹18 lakh–₹35 lakh+	6–10+ months
Enterprise Marketplace	₹35 lakh+	9–15+ months

Important: These are planning ranges, not fixed quotations. A marketplace involving delivery logistics, complex payouts, AI, real-time communication, multiple apps, or extensive integrations can cost considerably more.

What Determines Marketplace App Development Cost?

1. Number of Platforms

Building for:

Android
iOS
Web
Seller portal
Admin portal

will increase the scope.

2. UI/UX Complexity

A simple marketplace interface costs less than a highly customized experience involving:

Advanced animations
Interactive maps
Complex dashboards
Personalization
Custom design systems

3. Backend Architecture

Marketplace applications need a backend capable of handling:

Users
Listings
Orders
Payments
Payouts
Reviews
Notifications
Analytics

4. Payment Integration

Multi-party transactions introduce additional complexity.

For example:

Customer Payment

↓

Marketplace

↙ ↘

Fee Seller Amount

↓

Payout

Payment providers such as Stripe Connect provide infrastructure for onboarding, verification, payments, payouts, refunds, and marketplace operations.

For Indian businesses, however, payment-provider availability and capabilities should be checked before architecture decisions. Stripe currently states that its services in India are invite-only and that some Connect capabilities have regional restrictions.

5. Integrations

Additional integrations can increase cost:

Payment gateways
Maps
SMS
Email
WhatsApp
Shipping
Accounting
Analytics
CRM
Customer support
Identity verification

6. Security

Marketplace apps handle valuable information.

Security planning should cover:

Authentication
Authorization
Encryption
Secure APIs
Payment security
Data protection
Fraud prevention
Audit logs

OWASP’s API Security guidance is a useful reference when designing marketplace APIs.

OWASP API Security

Choosing the Technology Stack

A practical marketplace technology stack may include:

Layer	Common Options
Mobile App	Flutter, React Native, Swift, Kotlin
Web	React, Next.js
Backend	Node.js, Python, Java, .NET
Database	PostgreSQL, MySQL, MongoDB
Cloud	AWS, Google Cloud, Azure
Authentication	Firebase Auth, Auth0, Custom Auth
Payments	Razorpay, Stripe, other regional providers
Notifications	Firebase Cloud Messaging
Maps	Google Maps Platform, Mapbox
Analytics	GA4, Firebase Analytics, Mixpanel
Search	Elasticsearch, OpenSearch, Algolia

The best stack depends on your product requirements rather than popularity alone.

Cross-Platform vs Native

Factor	Cross-Platform	Native
Development speed	High	Moderate
Cost	Usually lower	Usually higher
Code sharing	High	Low
Platform-specific control	Moderate	Excellent
Suitable for MVP	Excellent	Good
Complex device features	Depends on requirements	Excellent

For many startups, cross-platform development can be a practical way to launch Android and iOS with a shared codebase.

Marketplace Monetization Models

Your revenue model should be designed before development because it can affect product architecture.

1. Commission

The marketplace takes a percentage of every transaction.

Example:

Customer pays ₹1,000
Marketplace commission: 10%
Marketplace earns: ₹100
Seller receives applicable balance after fees/adjustments

2. Seller Subscription

Charge vendors a monthly or annual fee.

Possible plans:

Free
Basic
Professional
Premium

3. Listing Fees

Charge sellers for publishing certain listings.

This can work well in:

Real estate
Jobs
Classifieds
Premium services

4. Featured Listings

Sellers pay to appear higher in search results or category pages.

5. Advertising

Generate revenue by offering sponsored placement.

6. Transaction Fees

Charge a fixed or variable platform fee on completed transactions.

7. Hybrid Model

A mature marketplace may combine:

Commission + Subscription + Advertising + Featured Listings

Step-by-Step Marketplace App Development Process

Step 1: Validate the Marketplace Idea

Before writing code, identify:

Target customers
Target sellers
Main problem
Existing competitors
Geographic market
Pricing model
Supply availability

Validation Checklist

Interview potential customers
Interview potential sellers
Analyse competitors
Identify the strongest customer pain point
Define your niche
Test pricing assumptions
Create a basic landing page
Collect early leads

Step 2: Define the Marketplace Model

Choose whether you are building:

B2C
B2B
C2C
Service marketplace
Product marketplace
Rental marketplace
Hybrid marketplace

Define exactly who pays whom.

Step 3: Design the MVP

Your MVP should include only the features required for the first successful transaction.

Example MVP

Buyer:

Registration
Search
Listing details
Cart/booking
Payment
Orders
Reviews

Seller:

Registration
Verification
Listing management
Order management
Earnings

Admin:

User management
Seller management
Listing management
Order management
Payments
Reports

Step 4: Create UI/UX

Start with:

User flows
Wireframes
Design system
High-fidelity screens
Prototype
Usability testing

Don’t design hundreds of screens before validating the core flow.

Step 5: Build the Backend

Create the architecture for:

Authentication
Profiles
Listings
Search
Orders
Payments
Payouts
Reviews
Notifications
Admin controls

Step 6: Develop the Apps

Depending on the product:

Customer mobile app
Seller mobile app
Web application
Admin dashboard

For an MVP, a single app with role-based access may sometimes be more economical than immediately developing separate buyer and seller apps.

Step 7: Integrate Payments

Test:

Successful payment
Failed payment
Refund
Partial refund
Seller payout
Commission calculation
Dispute
Cancellation

Never treat payments as an afterthought.

Step 8: Test the Marketplace

Test:

Functional flows
UI
Performance
Security
Payment processing
Notifications
API security
Device compatibility
Edge cases

Step 9: Launch a Controlled Beta

Start with:

One city
One category
One customer segment
A limited seller group

This reduces operational complexity.

Marketplace App Launch Roadmap

A practical launch roadmap can look like this:

Phase	Timeline	Main Activities
Discovery	Weeks 1–2	Research, validation, business model
Planning	Weeks 3–4	Requirements, architecture, MVP scope
UX/UI	Weeks 4–7	Wireframes, prototype, final design
Development	Weeks 6–14	Mobile, backend, admin
Integrations	Weeks 10–15	Payments, notifications, maps
QA	Weeks 13–17	Testing, security, performance
Beta	Weeks 17–19	Limited users and sellers
Launch	Weeks 20+	Marketing, onboarding, optimisation

The exact timeline varies significantly depending on scope and team size.

How to Launch a Marketplace Successfully

Building the app is only half the challenge.

The other half is creating marketplace liquidity.

Launch Supply First

Before attracting thousands of customers, make sure you have enough quality sellers.

For example:

100 active sellers + 1,000 customers

may be more useful than:

10 sellers + 10,000 customers.

The correct ratio depends on the category.

Start Narrow

Instead of:

“A marketplace for everything”

try:

“A marketplace for verified home-service professionals in Bengaluru.”

A focused niche can make supply and demand easier to coordinate.

Use Early Seller Incentives

Consider:

Zero commission for the first month
Free listings
Featured placement
Free onboarding
Referral bonuses

Build Trust

Trust signals can include:

Verified seller badges
Reviews
Ratings
Secure payments
Clear refund policies
Seller response times
Customer support

Marketplace App vs E-Commerce App

Feature	Marketplace	Traditional E-Commerce
Sellers	Multiple	Usually one
Inventory	Often seller-owned	Usually company-owned
Seller onboarding	Required	Not always
Seller payouts	Required	Not applicable in same way
Commission	Common	Less central
Disputes	Buyer-seller-platform	Mostly buyer-company
Admin complexity	High	Moderate
Network effects	Strong	Lower
Payment complexity	Higher	Lower
Supply management	Multi-party	Centralised

A marketplace is therefore more operationally complex than a standard online store.

Case Studies & Examples

Example 1: Product Marketplace

Imagine a startup creating a marketplace for local fashion brands.

MVP

Seller registration
Product listings
Search
Cart
Checkout
Order tracking
Reviews
Seller dashboard
Admin panel

Later

AI recommendations
Seller advertising
Loyalty program
Personalised feeds
Advanced analytics

The startup should first prove that customers are willing to purchase from independent local brands.

Example 2: Service Marketplace

Suppose you build a marketplace connecting customers with home-service professionals.

The transaction might be:

Customer

↓

Select Service

↓

Choose Professional

↓

Select Date & Time

↓

Book

↓

Payment

↓

Professional Completes Job

↓

Customer Review

The most important early features are therefore availability, booking, payments, service profiles, and reviews—not an elaborate social feed.

Example 3: Lessons From Large Marketplaces

Large marketplaces demonstrate why transaction infrastructure matters.

Stripe highlights Instacart as an example of a multi-sided marketplace that has to manage payments involving customers, grocery stores, and shoppers.

The lesson for startups is simple:

Design the money flow before designing the final UI.

Expert Opinion / Industry Guidance

Stripe’s marketplace documentation highlights seller onboarding, payment collection, payouts, refunds, disputes, and compliance as core marketplace requirements.

Apple also recommends deciding on a business model early because the business model can affect how the app’s onboarding and user experience should be designed.

Practical takeaway: Your marketplace’s business model, payment flow, and user roles should be defined before development begins.

Important App Store Considerations

If you are launching a marketplace app on iOS, payment rules depend on what users are purchasing.

Apple’s current App Review Guidelines distinguish between digital purchases and physical goods or services consumed outside the app. For physical goods and services outside the app, Apple says payment methods other than In-App Purchase must be used; other digital purchases can be subject to different rules.

Therefore, do not assume that a payment implementation suitable for a web marketplace automatically satisfies mobile-app store requirements.

Check the latest platform policies before launch.

Apple App Review Guidelines

Common Marketplace App Development Mistakes

Mistake 1: Building Too Many Features

More features don’t automatically mean more value.

Better approach: Build the smallest product capable of generating real transactions.

Mistake 2: Ignoring Sellers

Your marketplace is only as strong as its supply.

Mistake 3: Launching Without Enough Supply

Customers who find empty categories may never return.

Mistake 4: Treating Payments as a Simple Checkout

Marketplace payments can involve:

Multiple recipients
Fees
Refunds
Payouts
Verification
Disputes

Mistake 5: Ignoring Trust

A marketplace requires customers to trust people or businesses they may not know.

Mistake 6: Skipping Analytics

Track:

Sign-ups
Seller activation
Listing creation
Search
Add-to-cart
Booking
Payment
Cancellation
Repeat purchase

Mistake 7: Scaling Too Early

Do not build enterprise infrastructure before proving product-market fit.

How Much Does It Cost to Build a Marketplace App?

The cost to build a marketplace app in India can range from roughly ₹5 lakh for a basic MVP to ₹35 lakh or more for an advanced marketplace. The final cost depends on features, platform count, UI/UX complexity, payment integrations, backend architecture, third-party integrations, security requirements, and development team size.

For an accurate estimate, define the MVP features and user roles before requesting a development quote.

10 FAQs

1. How much does it cost to build a marketplace app in India?

A basic marketplace MVP may cost around ₹5 lakh–₹9 lakh, while a standard marketplace can fall around ₹9 lakh–₹18 lakh. Advanced or enterprise platforms can exceed ₹35 lakh. These are indicative planning ranges rather than fixed prices.

2. How long does it take to build a marketplace app?

A focused MVP may take approximately 10–16 weeks, while a more advanced marketplace can require 6–10 months or longer.

3. What features should a marketplace MVP have?

At minimum, consider:

Buyer registration
Seller registration
Listings
Search
Product/service details
Cart or booking
Payment
Orders
Seller dashboard
Admin panel
Reviews

4. Should I build Android and iOS at the same time?

If your target market uses both platforms, cross-platform development can be a practical MVP strategy. However, the correct choice depends on your users, product requirements, and budget.

5. Can I build a marketplace app with Flutter?

Yes. Flutter can be suitable for many marketplace applications because it can support Android and iOS from a shared codebase. The right technology should ultimately depend on your product requirements and development team.

6. How does a marketplace make money?

Common models include:

Commission
Subscription
Listing fees
Transaction fees
Advertising
Featured listings
Hybrid monetization

7. Do I need a separate seller app?

Not necessarily. An MVP can sometimes use role-based functionality inside one application plus an admin dashboard. A dedicated seller app can be introduced later when seller workflows become more complex.

8. What payment features does a marketplace need?

Depending on the model, you may need:

Customer payment
Seller onboarding
Commission calculation
Payouts
Refunds
Dispute management
Payment notifications
Transaction records

9. How can I attract users to a new marketplace?

Start with a focused niche and geographic market. Build supply first, recruit early sellers, offer launch incentives, use SEO and content marketing, and create referral mechanisms.

10. Can I launch an MVP before building the complete marketplace?

Yes—and this is often the smarter strategy.

Start with the smallest transaction loop, collect real user feedback, measure marketplace activity, and then invest in advanced features.

Marketplace App Development To-Do List

Before Development

Identify your marketplace niche
Define buyer and seller personas
Analyse competitors
Select the business model
Define monetization
Validate demand
Validate seller supply
Define MVP scope

During Development

Create user flows
Design UI/UX
Build backend architecture
Build buyer experience
Build seller experience
Build admin panel
Integrate payments
Add analytics
Implement security
Perform QA

Before Launch

Recruit initial sellers
Test payments
Test refunds
Test seller payouts
Test notifications
Test account recovery
Review privacy policies
Review app-store requirements
Prepare customer support
Launch beta

After Launch

Track conversion rate
Monitor seller activation
Track repeat purchases
Analyse cancellations
Collect reviews
Fix onboarding friction
Improve search
Test monetization
Prioritise feature requests

Key Takeaways

Remember These 7 Points

1. Start with one marketplace niche.
A focused marketplace is easier to validate.

2. Build for both sides.
Buyer experience and seller experience are equally important.

3. Keep the MVP small.
Focus on completing the first successful transaction.

4. Design payments early.
Multi-party payments and payouts can significantly affect architecture.

5. Build trust into the product.
Verification, ratings, reviews, policies, and support matter.

6. Launch locally before scaling.
Prove liquidity in a focused market.

7. Use data to decide what comes next.
Let customer behaviour—not assumptions—drive future development.

Suggested Visual: Marketplace Development Roadmap

IDEA

↓

Market Research

↓

Business Model

↓

MVP Definition

↓

UI/UX Design

↓

Backend + APIs

↓

Buyer + Seller Apps

↓

Payments + Integrations

↓

Testing + Security

↓

Beta Launch

↓

Measure

↓

Improve

↓

Scale

Conclusion

Building a marketplace app is a significant undertaking because you are not simply building a mobile application—you are building a transaction ecosystem.

The strongest marketplace products usually start with a focused problem, a defined buyer group, a reliable supply base, a simple transaction flow, and a clear monetization strategy.

For an Indian startup, an MVP-first approach can help control development costs while allowing the business to validate real demand before investing in advanced functionality.

Start with the essentials:

Buyer + Seller + Listing + Discovery + Transaction + Payment + Fulfilment + Trust.

Once those pieces work consistently, you can add AI recommendations, advanced analytics, loyalty programs, advertising, automation, and other growth features.

If you are planning to build a marketplace app, the next step should not be “How many features can we add?”

It should be:

“What is the smallest version of this marketplace that can generate a real transaction?”

That answer should become the foundation of your MVP.

Planning to build a marketplace app?

Gowda Digital Marketing can help you turn your marketplace idea into a practical MVP—from feature planning and UI/UX to development, launch, and digital marketing.

Ready to discuss your idea? Contact Gowda Digital Marketing and start planning your marketplace MVP.

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References & Sources

India Brand Equity Foundation — Indian E-Commerce Market
IBEF E-Commerce Industry Report
Stripe — Marketplace Payments 101
Stripe Marketplace Payments Guide
Stripe — Payments for Marketplaces
Stripe for Marketplaces
Stripe — Embedded Payments for Online Marketplaces
Stripe Embedded Marketplace Payments Guide
Stripe — Multivendor Marketplace Payments
Stripe Multivendor Marketplace Payments Guide
Apple — App Review Guidelines
Apple App Review Guidelines
Apple — App Store Getting Started Guide
Apple App Store Getting Started
OWASP — API Security Project
OWASP API Security