Research on digital trade, finance, investment, and regional integration remains fragmented, and cross-regional comparisons often rely on broad labels that obscure implementation differences and distributional risks. This conceptual study develops a testable five-pillar framework for regional market integration under digital and investment transformation. A structured narrative review was conducted using 57 full-text candidate documents identified through academic metadata searches and official repositories; 43 sources were retained after relevance and quality appraisal. Evidence was coded for mechanisms, complementarities, moderators, feedback effects, social outcomes, and risks. The European Union, ASEAN, the Eurasian Economic Union, and the African Continental Free Trade Area were then examined as most-different institutional cases using a common four-level implementation scale. The synthesis indicates that digital infrastructure is an enabling rather than sufficient condition. Human capital and institutional interoperability moderate its effects, while financial modernization and productive investment mediate the conversion of connectivity into cross-border exchange. Socially sustainable outcomes additionally depend on affordability, decent-work conditions, data rights, consumer protection, and territorial inclusion. The contribution is a framework that distinguishes enabling conditions, mechanisms, outcomes, risks, and feedback loops; states seven propositions; and specifies an empirical validation algorithm without presenting conceptual relationships as estimated effects. For policy, the framework supports sequenced diagnostics, interoperability pilots, safeguard design, and indicator-based scaling rather than isolated technology spending.

1.          Baldwin, R. The Great Convergence: Information Technology and the New Globalization. Cambridge, MA: Harvard University Press; 2016.

2.          Goldfarb A, Tucker C. Digital economics. Journal of Economic Literature. 2019; 57(1): 3–43. doi: 10.1257/jel.20171452

3.          United Nations Conference on Trade and Development. World Investment Report 2025: International Investment in the Digital Economy. Geneva: UNCTAD; 2025. Available online: https://unctad.org/publication/world-investment-report-2025 (accessed on 21 July 2026).

4.          World Trade Organization. World Trade Report 2025: Making Trade and AI Work Together to the Benefit of All. Geneva: WTO; 2025. Available online: https://www.wto.org/english/res_e/publications_e/wtr25_e.htm (accessed 21 July 2026).

5.          European Commission. State of the Digital Decade 2025 Report. Brussels: European Commission; 2025. Available online: https://digital-strategy.ec.europa.eu/en/library/state-digital-decade-2025-report (accessed on 21 July 2026).

6.          African Union. Protocol to the Agreement Establishing the African Continental Free Trade Area on Digital Trade. Addis Ababa: African Union; adopted 18 February 2024. Available online: https://au.int/en/treaties/protocol-agreement-establishing-african-continental-free-trade-area-digital-trade (accessed on 21 July 2026).

7.          African Union. Protocol to the Agreement Establishing the African Continental Free Trade Area on Women and Youth in Trade. Addis Ababa: African Union; 2024. Available online: https://au.int/sites/default/files/treaties/45076-treaty-EN_AfCFTA_Protocol_on_Women_and_Youth_Trade.pdf (accessed on 21 July 2026).

8.          African Union. The African Continental Free Trade Area: Operational Instruments. Addis Ababa: African Union. Available online: https://au.int/en/african-continental-free-trade-area (accessed on 21 July 2026).

9.          Eurasian Economic Commission. Five-year Roadmap for Developing EAEU Economic Processes Approved. Moscow: Eurasian Economic Commission; 21 December 2025. Available online: https://eec.eaeunion.org/en/news/utverzhdena-dorozhnaya-karta-po-razvitiyu-ekonomicheskikh-protsessov-v-ramkakh-eaes-na-pyat-let/ (accessed on 21 July 2026).

10.       United Nations Conference on Trade and Development. Leveraging Digital Technologies for MSMEs’ Integration into Regional Value and Supply Chains. Geneva: UNCTAD; 2025. Available online: https://unctad.org/system/files/official-document/aldc2025d2_en.pdf (accessed on 16 May 2026).

11.       Organisation for Economic Co-operation and Development. OECD Digital Economy Outlook 2024. Paris: OECD Publishing; 2024. doi: 10.1787/a1689dc5-en

12.       World Bank. The Global Findex Database 2025. Washington, DC: World Bank; 2025. Available online: https://www.worldbank.org/en/publication/globalfindex (accessed on 21 July 2026).

13.       Basel Committee on Banking Supervision. Digitalisation of Finance. Basel: Bank for International Settlements; 2024. Available online: https://www.bis.org/bcbs/publ/d575.htm (accessed on 21 July 2026).

14.       Cantú C, Ulloa B. From financial inclusion to financial health. BIS Bulletin No. 85. Basel: Bank for International Settlements; 2024. Available Online: https://www.bis.org/publ/bisbull85.htm (accessed on 21 July 2026).

15.       North DC. Institutions, Institutional Change and Economic Performance. Cambridge: Cambridge University Press; 1990.

16.       Balassa B. The Theory of Economic Integration. Homewood, IL: Richard D. Irwin; 1961.

17.       Levine R. Finance and growth: theory and evidence. In: Aghion P, Durlauf SN, editors. Handbook of Economic Growth. Amsterdam: Elsevier; 2005. pp. 865–934. doi: 10.1016/S1574-0684(05)01012-9

18.       Beck T, Demirgüç-Kunt A, Levine R. Finance, inequality and the poor. Journal of Economic Growth. 2007; 12: 27–49. doi: 10.1007/s10887-007-9010-6

19.       Barbero J, Rodríguez-Crespo E. Technological, institutional, and geographical peripheries: regional development and risk of poverty in the European regions. Annals of Regional Science. 2022; 69: 311–332. doi: 10.1007/s00168-022-01127-9

20.       Bănică A, Ţigănaşu R, Nijkamp P, Kourtit K. Institutional quality in green and digital transition of EU regions—a recovery and resilience analysis. Global Challenges. 2024; 8: 2400031. doi: 10.1002/gch2.202400031

21.       Cuadrado-Roura JR, Kourtit K, Nijkamp P. Spatial disparities, convergence and economic development: A global and local orientation. Annals of Regional Science. 2025; 74: 83. doi: 10.1007/s00168-025-01407-0

22.       Le TAT. The impact of digital transformation on economic integration in ASEAN-6: evidence from a generalized least squares model. Journal of Risk and Financial Management. 2025; 18(4): 189. doi: 10.3390/jrfm18040189

23.       David LK, Wang J, Brooks W, Angel V. Digital transformation and socio-economic development in emerging economies: A multinational analysis. Technology in Society. 2025; 81: 102834. doi: 10.1016/j.techsoc.2025.102834

24.       Jiang Y, Yu W. Digital Transformation and Cross-Regional Investment: Evidence from China. International Review of Economics and Finance. 2026; 108: 105189. doi: 10.1016/j.iref.2026.105189

25.       Edo S. Digital transformation and financial development in emerging economies: Regional variations and policy contingencies. Digital Economy and Sustainable Development. 2025; 3: 12. doi: 10.1007/s44265-025-00063-8

26.       Gomber P, Koch JA, Siering M. On the fintech revolution: interpreting the forces of innovation, disruption, and transformation in financial services. Journal of Management Information Systems. 2018; 35(1): 220–265. doi: 10.1080/07421222.2018.1440766

27.       Samara E, Andronikidis A, Komninos N, et al. The role of digital technologies for regional development: A system dynamics analysis. Journal of the Knowledge Economy. 2023; 14: 2215–2237. doi: 10.1007/s13132-022-00951-w

28.       Koval V, Borodina O, Lomachynska I, et al. Model analysis of eco-innovation for national decarbonisation transition in integrated European energy system. Energies. 2022; 15(9): 3306. doi: 10.3390/en15093306

29.       Bergantino AS, Fusco G, Intini M, et al. Digital divide and income inequality: Causal evidence from Italian provinces. Annals of Regional Science. 2026; 75: 11. doi: 10.1007/s00168-025-01440-z

30.       Freund CL, Weinhold D. The effect of the Internet on international trade. Journal of International Economics. 2004; 62(1): 171–189. doi: 10.1016/S0022-1996(03)00059-X.

31.       Association of Southeast Asian Nations. ASEAN Digital Masterplan 2030. Jakarta: ASEAN Secretariat; 2026. Available online: https://asean.org/wp-content/uploads/2026/01/ASEAN-Digital-Master-Plan-2030-final-2026.pdf (accessed on 21 July 2026).

32.       Association of Southeast Asian Nations. Statement of the Chairperson of the ASEAN Senior Economic Officials on the Conclusion of ASEAN Digital Economy Framework Agreement Negotiations. Jakarta: ASEAN Secretariat; 2026. Available online: https://asean.org/statement-of-the-chairperson-of-the-asean-senior-economic-officials-seom-on-the-conclusion-of-asean-defa-negotiations/ (accessed on 21 July 2026).

33.       Baethge C, Goldbeck-Wood S, Mertens S. SANRA—a scale for the quality assessment of narrative review articles. Research Integrity and Peer Review. 2019; 4: 5. doi: 10.1186/s41073-019-0064-8

34.       United Nations Conference on Trade and Development. The Investment Dimension of Digital Strategies. Investment Policy Monitor No. 31. Geneva: UNCTAD; 2025. Available online: https://unctad.org/system/files/official-document/diaepcbinf2025d3_en.pdf (access on 16 May 2026).

35.       Organisation for Economic Co-operation and Development. Trade Facilitation Indicators 2025. Paris: OECD; 2025. Available online: https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/03/oecd-trade-facilitation-indicators_0a21eb4a/fd6f27dc-en.pdf (access on 16 May 2026).

36.       World Bank. Business Ready 2025. Washington, DC: World Bank; 2025. Available online: https://www.worldbank.org/en/businessready (accessed on 21 July 2026).

37.       European Commission. Digital Decade 2025: Declaration on Digital Rights and Principles—Monitoring Report 2025. Brussels: European Commission; 2025. Available online: https://digital-strategy.ec.europa.eu/en/policies/2025-state-digital-decade-package (accessed on 21 July 2026).

38.       World Bank. The Global State of Financial Inclusion and Consumer Protection, 2022. Washington, DC: World Bank; 2023. Available online: http://documents.worldbank.org/curated/en/099013124180517721 (accessed on 21 July 2026).

39.       Eurostat. Skills for the Digital Age. Statistics Explained. Luxembourg: European Commission; 2026. Available online: https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Skills_for_the_digital_age (accessed on 21 July 2026).

40.       Kalybekova DB, Sansyzbayeva G, Koishybaeva M, et al. Digital economy within the Eurasian Economic Union: Current state and development prospects. Regional Science Inquiry. 2021; 13(1): 31–48. Available online: https://www.rsijournal.eu/ARTICLES/June_2021/3.pdf (accessed on 16 May 2026).

41.       Turyan KV. Institutional and Technological Foundations of Economic Integration in Post Soviet Countries via Decentralized Financial Flows. Journal of Posthumanism. 2025; 5(6): 1486–1497. doi: 10.63332/joph.v5i6.2212

42.       Draghi M. The Future of European Competitiveness. Brussels: European Commission; 2024. Available online: https://commission.europa.eu/document/download/97e481fd-2dc3-412d-be4c-f152a8232961_en (accessed on 16 May 2026).

43.       World Trade Organization. World Trade Report 2023: Re-globalization for a Secure, Inclusive and Sustainable Future. Geneva: WTO; 2023. Available online: https://www.wto.org/english/res_e/booksp_e/wtr23_e/wtr23_e.pdf (accessed on 21 July 2026).