Nice — below is a compact, citation-backed market reference for the Digital Payment Market with (A) market-size bandwidths, (B) the major companies you should reference (with best-available public values or proxies), and (C) the strategic bullets you requested: Recent developments, Drivers, Restraints, Regional segmentation, Emerging trends, Top use cases, Major challenges, Attractive opportunities, and Key expansion factors.

I pulled figures from public company filings, vendor market reports and recent news. I placed citations after the most load-bearing statements so you can trace each number.

Read complete report at: https://www.thebrainyinsights.com/report/digital-payment-market-13539

Quick market snapshot

• Global market size (vendor range): analyst estimates cluster in the USD 110–140 billion (2024) band and forecast strong multi-year growth to the hundreds of billions by the end of the decade — e.g. Grand View: USD 114.41B in 2024 → USD 361.3B by 2030 (CAGR ~21.4%); Technavio / ResearchAndMarkets publish nearby forecasts (High-teens to mid-20s % CAGR depending on scope).

Major companies — reference list (with best-available public values / proxies)

1. Visa Inc. — global card network / rails.
   • FY 2024 net revenue: $35.9B; total payments volume processed ~$16T in FY2024 (234B transactions processed in 2024).

2. Mastercard — global card network / rails.
   • Net revenue (2024): ~$28.2B (Mastercard FY2024 consolidated net revenue).

3. PayPal Holdings (Venmo, Zettle) — digital wallets / merchant services.
   • Net revenue (FY2024): ~$31.8B; large active-account base and processed TPV in the trillions.

4. Ant Group (Alipay) — leading mobile-wallet ecosystem in China & overseas expansion (Alipay).
   • Public company-level reporting is limited; Ant is a dominant player in China (Alipay user base and volumes are major anchors for APAC payments). See company reports & sustainability filings for scale and investments.

5. Stripe — payments gateway / processor & developer platform.
   • Stripe reported total payment volume (TPV) ≈ $1.4T in 2024, a useful proxy for platform scale (Stripe’s private revenue figures are less granular publicly).

6. Adyen — global payments processor / acquiring / gateway (strong in e-commerce & POS integrations).
   • Net revenue (FY2024): ~€2.0B; processed volumes in the hundreds of billions (H2 2024 processed volume metrics reported). 

7. Block, Inc. (Square / Cash App) — merchant POS + consumer P2P.
   • Block (Square) corporate filings show continued growth in software / Cash App; use company annual report filings as anchor for revenue / gross profit trends. 

8. Global Payments / Worldpay / FIS / Fiserv — acquirers & processors (large transaction volumes and recent consolidation — Global Payments acquired Worldpay).
   • Recent M&A: Global Payments acquisition of Worldpay (~$22.7B deal) demonstrates consolidation. Use Global Payments / FIS / Fiserv filings for revenue/processing metrics.

9. Regional champions & fintechs: Razorpay / PhonePe / Paytm (India), Alipay/WeChat Pay (China), MercadoPago (LATAM), OPay/MoMo (Africa/SE Asia) — these firms drive large regional volumes (UPI in India is also crucial — see regional notes). For national modelling, use local regulator / central-bank or vendor reports.

Recent developments (high-impact)

• Large vendor & hyperscaler investments + consolidation — continued M&A among processors / acquirers (Global Payments–Worldpay) and increasingly embedded finance features across ecosystems.

• Rapid growth of mobile wallets & real-time rails (UPI, QR, tap-to-pay, tokenized payments) — India’s UPI now dominates global RTP by volume (IMF/official statements).

• Post-pandemic normalization with structural acceleration in e-commerce + BNPL + contactless, while some vendors broaden into banking (e.g., PayPal applying for a U.S. bank charter).

Drivers

• E-commerce & mobile commerce expansion; consumer preference for contactless & QR payments.

• Merchant demand for omnichannel payments, faster settlement and integrated value-added services (fraud, analytics, lending). 

• Regulatory push for real-time rails and digital inclusion (central-bank initiatives and government-backed systems such as UPI).

Restraints

• Regulatory scrutiny (anti-money-laundering, data-localization, fintech licensing) — particularly impactful for cross-border wallet players. 

• Margin pressure & fee compression from competition (networks, acquirers, and alternative rails).

• Fraud & cybersecurity risks — ongoing cost for trust and compliance. 

Regional segmentation analysis (high level)

• Asia-Pacific: largest by transaction volume (massive mobile-wallet ecosystems in China, India’s UPI, SEA wallets). APAC often shows fastest volume growth.

• North America & Europe: high ARPU per transaction, mature card rails, fast adoption of BNPL and embedded payments.

• Latin America & Africa: rapid consumer adoption of mobile wallets and fintech alternatives — large room for financial inclusion expansion. 

Emerging trends

• Buy-Now-Pay-Later (BNPL) embedded into checkout flows; merchant adoption to boost AOV.

• Tokenization & tap-to-pay on mobile devices (Stripe / PayPal / Visa initiatives).

• Embedded finance (payments + lending + banking as a service) — example: PayPal pursuing a bank charter; platforms offering deposits, lending, cards.

• AI & risk/fraud orchestration powering real-time authorization and dynamic routing for cost optimization.

Top use cases

1. E-commerce checkout / marketplaces (merchant payments + payout flows).

2. In-store contactless payments (NFC, QR).

3. P2P / remittances (wallets & instant rails).

4. Embedded payments inside apps (ride-hailing, food delivery, SaaS billing).

5. Merchant acquiring & POS (SMB payments + integrated software + financing).

Major challenges

• Cross-border complexity (FX, settlement, local compliance) limiting scale for some fintechs.

• Regulatory risk for large platform players (data, consumer protection, licensing).

• Differentiating on margin-squeezed payments vs. building profitable adjacent services (BNPL, lending, data services).

Attractive opportunities

• Embedded commerce payments (developer-friendly APIs + value-added merchant services).

• SME financial services (payments + working capital + banking).

• Cross-border SMB commerce (payments + FX + payouts) — lower friction for marketplaces.

Key factors of market expansion (what will move the needle)

1. Uptake of real-time rails & open-API banking (reduces friction and costs).

2. Interoperability & merchant integration (one-stop stacks) — drives higher merchant retention and share-of-wallet.

3. Regulatory clarity for fintechs & cross-border flows (makes scaling easier).

4. New product monetization (BNPL, lending, subscriptions, embedded banking) that raises revenue per merchant/customer.

Quick at-a-glance table (summary)