| Acronym / Abbreviation | Full Term |
| ACCC | Australian Competition and Consumer Commission |
| AGCM | Italian Autorità Garante della Concorrenza e del Mercato |
| APM | Automated Parcel Machine |
| AWS | Amazon Web Services |
| B2B | Business-to-Business |
| B2C | Business-to-Consumer |
| BNPL | Buy Now, Pay Later |
| C2C | Consumer-to-Consumer |
| CJEU | Court of Justice of the European Union |
| COFECE | Mexican Comisión Federal de Competencia Económica |
| CPM | Cost Per Mille |
| CPC | Cost Per Click |
| CSS | Comparison Shopping Service |
| DMA | Digital Markets Act |
| DSA | Digital Services Act |
| DSM | Digital Single Market |
| EC | European Commission |
| EEA | European Economic Area |
| EU | European Union |
| F2C | Factory-to-Consumer |
| FBA | Fulfilment by Amazon |
| FBP | Fulfilment by Pigu |
| FBS | Fulfilled by Shopee |
| FTI | Financial Times Index |
| GDPR | General Data Protection Regulation |
| GLS | General Logistics Systems |
| GMV | Gross Merchandise Value |
| GPSR | General Product Safety Regulation |
| LP EXPRESS | Lietuvos Paštas Express |
| MFN | Most Favoured Nation (Clause) |
| MS | Member State(s) |
| NCA | National Competition Authority |
| OECD | Organisation for Economic Co‑operation and Development |
| OCAS | Online Classified Ads Service |
| P2B | Platform-to-Business Regulation |
| PLN | Polish Złoty |
| Prime | Amazon Prime |
| SE | Societas Europaea |
| SME | Small and Medium-sized Enterprise |
| SSNIP | Small but Significant and Non-transitory Increase in Price |
| TFEU | Treaty on the Functioning of the European Union |
| TSI | Technical Support Instrument |
| UOKiK | Polish Urząd Ochrony Konkurencji i Konsumentów |
| UTC | Unfair Trading Condition(s) |
| VAT | Value Added Tax |
| VLOP | Very Large Online Platform |
| WE/DO | Logistics and delivery service acquired by Allegro |
Competition Market Study of Online Marketplaces in Poland, Latvia and Lithuania
