1. Introduction

Commercial platform governance in Thailand refers to the legal rules, institutional mechanisms, contractual arrangements and civil-liability principles governing businesses that operate digital platforms for commercial transactions.

These platforms include:

Online marketplaces and e-commerce websites.

Digital payment and financial-service platforms.

Food delivery and transportation applications.

Social-commerce and advertising platforms.

Cloud computing and software-as-a-service providers.

Digital intermediaries connecting sellers, consumers and service providers.

Algorithmic recommendation and automated pricing systems.

The central legal question is whether a digital platform should be treated merely as a technological intermediary or as an independent commercial enterprise responsible for its own contractual obligations, consumer protection failures, unfair commercial practices and negligent conduct.

Thailand does not rely on one comprehensive digital-platform statute. Instead, its governance framework combines the Electronic Transactions Act B.E. 2544 (2001), the Royal Decree on the Operation of Digital Platform Service Businesses Subject to Prior Notification B.E. 2565 (2022), the Civil and Commercial Code, consumer protection legislation, personal data protection law and competition law.

An important judicial development is Supreme Court Decision No. 4459/2565, which demonstrates that a platform's actual commercial activities and its relationship with consumers can be more important than its description of itself as a mere intermediary.

2. Main legislative framework

A. Civil and Commercial Code

The Thai Civil and Commercial Code (CCC) provides the general foundation for commercial platform liability.

Section 150 – Unlawful acts and public policy

Contracts or legal acts contrary to law, public order or good morals may be void.

Application:

Unlawful platform agreements.

Contractual provisions designed to evade mandatory consumer protections.

Commercial arrangements involving prohibited transactions.

Unfair contractual restrictions contrary to applicable law.

Section 171 – Interpretation of declarations of intention

The interpretation of a declaration of intention must consider the true intention rather than relying exclusively on its literal wording.

Application to digital platforms:

Interpretation of online acceptance.

Disputes over electronic consent.

Automated contractual transactions.

Conflicting platform terms and promotional representations.

Section 368 – Good-faith interpretation

Contracts must be interpreted according to good faith and ordinary usage.

This is particularly relevant when platforms:

Change contractual conditions.

Suspend seller accounts.

Withhold payments.

Modify commission structures.

Restrict access to marketplace services.

Section 420 – Tortious liability

A person who wilfully or negligently unlawfully injures another person's life, body, health, liberty, property or rights must compensate the injured person.

This provision can apply to:

Negligent platform security.

Harmful disclosure of personal information.

Unlawful account suspension.

Negligent payment administration.

Commercial misconduct causing legally recognised injury.

Section 423 – False statements

A person who makes or circulates a false statement damaging another person's reputation, credit or economic interests may incur liability.

This is relevant to false seller ratings, defamatory commercial content and misleading platform communications.

Section 425 – Employer liability

An employer may be jointly liable with an employee for wrongful acts committed in the course of employment.

This may become relevant where platform employees engage in wrongful account administration, unlawful disclosures or other tortious conduct within their employment functions.

B. Electronic Transactions Act B.E. 2544 (2001)

The Electronic Transactions Act establishes the legal foundation for electronic commercial transactions.

Its principal functions include:

Recognition of electronic records.

Legal recognition of electronic signatures.

Recognition of electronic contractual formation.

Rules concerning electronic communications.

Evidentiary recognition of electronic information.

Recognition of electronic transaction service arrangements.

The Act is particularly important because digital platforms frequently conclude contracts without traditional paper documentation.

It helps determine whether:

A consumer accepted an online agreement.

A seller entered into an electronic commercial contract.

An electronic signature is legally effective.

An electronic order constitutes contractual acceptance.

Electronic records can establish contractual performance.

C. Royal Decree on Digital Platform Services B.E. 2565 (2022)

Central platform-governance legislation

The Royal Decree on the Operation of Digital Platform Service Businesses Subject to Prior Notification B.E. 2565 was published on 23 December 2022 and became effective on 21 August 2023.

It establishes a regulatory framework for specified digital platform service businesses operating in Thailand.

Its objectives include:

Improving platform transparency.

Protecting platform users.

Requiring specified operators to notify the Electronic Transactions Development Agency (ETDA).

Improving disclosure of platform operating conditions.

Establishing mechanisms for regulatory cooperation.

Encouraging appropriate platform self-regulation.

The framework covers intermediary digital services that connect platform operators, consumers and other users through electronic networks for electronic transactions.

Important governance responsibilities include:

1. Regulatory notification

Covered platform operators must comply with applicable notification requirements.

2. Terms and conditions

Platforms must provide appropriate information about their services, contractual conditions and relevant changes.

3. User protection

The framework establishes requirements concerning complaints, remedies and the protection of affected users.

4. Transparency

Users should receive relevant information about platform operations, commercial arrangements and service conditions.

5. Regulatory cooperation

ETDA can coordinate with other government authorities responsible for relevant platform activities.

The Decree also operates alongside implementing notifications issued by the Electronic Transactions Commission.

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D. Personal Data Protection Act B.E. 2562 (2019)

The Personal Data Protection Act (PDPA) regulates the collection, use, disclosure and processing of personal information.

It is particularly significant for commercial platforms because they process large quantities of consumer and seller information.

Important provisions include:

Section 19: Consent requirements.

Section 23: Information that must be provided to data subjects.

Section 24: Legal bases for collecting personal data.

Section 26: Special categories of personal data.

Sections 37 and 40: Responsibilities of data controllers and processors.

Section 77: Civil liability for damage arising from violations of the Act.

Section 78: Compensation and punitive damages in appropriate circumstances.

Examples of platform-related disputes include:

Unauthorised disclosure of consumer information.

Misuse of location data.

Improper sharing of seller databases.

Unlawful targeted advertising.

Data breaches involving payment information.

Improper automated profiling.

E. Consumer Protection Act B.E. 2522 (1979)

The Consumer Protection Act protects consumers against unfair commercial practices.

Its relevance to platform governance includes:

Misleading online advertisements.

False product descriptions.

Unfair contractual conditions.

Misrepresentation of commercial offers.

Inadequate disclosure of product information.

Unfair consumer complaint procedures.

The Direct Sales and Direct Marketing Act B.E. 2545 (2002), as amended, is also particularly important for online marketplaces.

Where a platform's activities fall within the statutory definition of direct marketing, the operator may have obligations as a regulated direct-marketing business.

This distinction is important: a platform cannot automatically avoid regulatory responsibility merely by describing itself as a marketplace intermediary.

F. Trade Competition Act B.E. 2560 (2017)

The Trade Competition Act governs anti-competitive conduct in commercial markets.

Relevant provisions include:

Platform-related competition issues include:

Self-preferencing.

Exclusion of competing sellers.

Excessive marketplace commissions.

Unfair ranking algorithms.

Restrictive exclusivity agreements.

Discriminatory access to platform services.

Preferential treatment of affiliated businesses.

An important recent development is the Trade Competition Commission's e-commerce guidelines, which took effect on 25 March 2026. They address pricing restrictions, unjustified price differences, excessive charges, algorithmic product visibility and preferential treatment on multi-sided platforms.

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G. Computer Crime Act B.E. 2550 (2007), as amended

The Computer Crime Act regulates specified unlawful conduct involving computer systems and information.

Section 14 addresses specified categories of unlawful computer data, while Section 15 concerns service-provider responsibility in circumstances involving cooperation, consent or support for relevant offences.

For commercial platforms, this legislation is relevant to:

Fraudulent online transactions.

Unlawful publication.

Computer-system interference.

Certain forms of harmful online content.

Intermediary responsibility.

It should not be interpreted as imposing automatic liability on every platform for every unlawful act committed by a user.

3. Major principles of commercial platform governance

3.1 Platform accountability

Platform accountability means that a platform operator must take responsibility for its own legally relevant conduct.

For example, an operator may be responsible for:

Its own misleading advertisements.

Its own contractual promises.

Improper payment administration.

Unlawful personal-data processing.

Negligent security practices.

Unfair account termination.

The distinction between platform-owned services and third-party seller services is important when determining liability.

3.2 Contractual governance

Digital platforms generally maintain several contractual relationships:

Platform–consumer agreements.

Platform–seller agreements.

Platform–payment provider agreements.

Platform–logistics provider agreements.

Platform–advertiser agreements.

Platform–technology provider agreements.

These relationships must be assessed separately.

For example, a seller may be contractually responsible for defective goods, while the platform may separately be responsible for its own failure to administer refunds according to its contractual commitments.

3.3 Algorithmic governance

Algorithms influence the commercial relationships between platform participants.

Examples include:

Automated seller ranking.

Dynamic pricing.

Product recommendations.

Fraud detection.

Automated account suspension.

Consumer risk profiling.

Advertising allocation.

Thai law does not establish a single comprehensive civil-liability regime for all algorithmic decisions.

Nevertheless, algorithmic conduct may be assessed under existing contract, tort, consumer protection, competition and personal-data legislation.

3.4 Consumer dispute resolution

Consumer disputes may arise from:

Non-delivery of purchased goods.

Counterfeit products.

Unauthorised payment deductions.

Defective products.

Refund refusal.

Misleading advertising.

Unfair platform account restrictions.

Thailand's Civil Court established an Online Shopping Division in January 2022. It deals with relevant online shopping, internet-payment and related logistics disputes through specialised online procedures.

The Consumer Case Procedure Act B.E. 2551 (2008) provides an important procedural framework for qualifying consumer disputes.

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3.5 Platform transparency

Transparency requires platforms to communicate important information about their commercial operations.

This includes:

Seller identification.

Commission and service charges.

Refund and cancellation policies.

Account suspension conditions.

Payment procedures.

Advertising arrangements.

Relevant changes to contractual conditions.

Transparency is particularly important where a platform exercises substantial control over commercial transactions.

3.6 Fair treatment of sellers

Platforms may have significant bargaining power over small businesses.

Potential disputes include:

Arbitrary suspension of seller accounts.

Unilateral changes in commissions.

Delayed payment settlements.

Discriminatory product visibility.

Unreasonable advertising charges.

Restrictions on competing logistics providers.

The CCC's good-faith principles and the Trade Competition Act may provide legal grounds for challenging such conduct, depending on the circumstances.

4. Important Thai judicial decisions and case laws

The following decisions are relevant to commercial platform governance. An important qualification is necessary: Thailand has relatively limited reported Supreme Court jurisprudence directly addressing the modern digital-platform regulatory regime. Accordingly, the cases below include direct platform decisions and analogous decisions involving online publication, commercial reputation and digital intermediary responsibility. They should not all be treated as direct precedents on the 2022 Royal Decree.

Case 1. Supreme Court Decision No. 4459/2565

Directly relevant platform decision

Subject: Online marketplace liability and consumer protection.

Facts:

The dispute concerned a commercial e-commerce operator that operated a website and application selling its own products and facilitating sales by other direct-marketing businesses.

The consumer had purchased products through the platform and subsequently became involved in several consumer disputes.

The platform suspended the consumer's account and restricted access to its services.

Legal issue:

Whether the platform's commercial activities brought it within the definition of a direct-marketing business under the Direct Sales and Direct Marketing Act.

Judicial significance:

The Supreme Court examined the actual business activities of the operator, including its electronic marketing activities and its direct relationship with consumers.

The judgment recognised the importance of the regulatory obligations applicable to direct-marketing businesses, including registration-related requirements and security arrangements.

Principles established:

Commercial platform operations must be examined according to their actual activities.

A digital marketplace may fall within the statutory definition of direct marketing.

Consumer protection legislation can apply to platform operators.

Platform business models must be evaluated according to the nature of the transactions.

Courts must balance commercial interests with consumer protection.

Importance: This is particularly significant because it directly addresses the legal status of an e-commerce operator under Thai consumer legislation.

Case 2. Chiranuch Premchaiporn Case – Supreme Court Case No. A.1167/2553

Subject: Online platform responsibility for third-party content.

Facts:

Chiranuch Premchaiporn, associated with the Prachatai online newspaper, faced criminal proceedings concerning allegedly unlawful comments posted by users on an online discussion forum.

The proceedings concerned the failure to remove the comments promptly.

Legal issue:

Whether the person responsible for managing an online platform could incur liability under Section 15 of the Computer Crime Act.

Judicial significance:

The case demonstrated that platform operators cannot automatically assume that hosting third-party content removes all statutory responsibility.

The operator's conduct and the statutory requirements concerning responsibility must be examined.

Principles relevant to platform governance:

Online content management can create legal exposure.

Platform administrators must understand applicable content laws.

Third-party publication may raise intermediary liability questions.

Content moderation procedures have legal significance.

Platform governance must balance legal compliance and freedom of expression.

Importance: The decision is relevant to social-media operators, discussion forums, digital marketplaces and other user-generated-content platforms.

Case 3. Supreme Court Decision No. 4403/2566

Subject: Digital publication, online defamation and privacy protection.

Facts:

The case concerned the online dissemination of intimate video material involving a person without lawful consent.

The material was distributed through a publicly accessible Twitter account.

Legal issue:

Whether the dissemination of intimate digital material could constitute unlawful publication and defamation.

Judicial significance:

The Supreme Court considered the criminal consequences of the publication and the evidentiary circumstances connecting the defendant with the dissemination.

The judgment illustrates that online publication can produce serious legal consequences even when the original material was created or possessed privately.

Principles relevant to platform governance:

Digital publication does not eliminate ordinary legal responsibility.

Unlawful dissemination of private material can attract legal sanctions.

Digital evidence can be important in establishing responsibility.

Platforms require effective reporting and content-management procedures.

Privacy and reputation must be protected in digital commercial environments.

Importance: Relevant to social-commerce platforms, content-sharing services and operators handling sensitive user information.

Case 4. Supreme Court Decision No. 976/2567

Subject: Online broadcasts and defamation by publication.

Facts:

The dispute involved statements made during online programmes distributed through YouTube and Facebook.

Although the affected individual was not expressly identified by name, the statements and surrounding context allegedly made the individual identifiable.

Legal issue:

Whether online statements can constitute defamation by publication when the person concerned is identifiable from the context.

Judicial significance:

The Supreme Court treated the statements as a whole and considered whether the person concerned could be identified.

The case illustrates the legal consequences of disseminating harmful information through digital broadcasting channels.

Principles relevant to commercial platforms:

Express identification by name is not always necessary.

Context is relevant to identifying an affected individual.

Online broadcasting can constitute publication.

Digital communication can damage commercial and personal reputation.

Corrective publication may be an appropriate remedy.

Importance: Relevant to influencer platforms, online advertising services, digital publishers and social-media businesses.

Case 5. Natural Fruit Co. Ltd. v. Andy Hall – Appeal Court Decision No. 591/2561

Subject: Online publication, commercial reputation and freedom of expression.

Facts:

Andy Hall, a researcher and labour-rights advocate, was involved in research concerning the treatment of migrant workers in Thailand.

Natural Fruit brought legal proceedings concerning statements and research findings communicated through media, including internet publications.

Legal issue:

Whether the publication of allegations concerning a company's commercial practices amounted to unlawful defamation.

Judicial significance:

The Appeal Court ruled in Andy Hall's favour in the relevant criminal defamation proceedings.

The case demonstrated the importance of assessing the evidentiary basis and public-interest character of statements concerning commercial enterprises.

Principles relevant to platform governance:

Online publication can affect corporate reputation.

Commercial entities may seek legal protection against defamatory communications.

Evidence supporting published statements is important.

Public-interest expression must be considered.

Platform governance must avoid unnecessarily suppressing lawful information.

Importance: Relevant to online review platforms, consumer-rating services, digital journalism and commercial reputation management.

Case 6. Natural Fruit Co. Ltd. v. Andy Hall – Bangkok South Criminal Court Decision No. 2949/2559

Subject: Digital publication and liability for allegedly false commercial information.

Facts:

This was an earlier decision in the Natural Fruit litigation concerning research and public communications about alleged labour-rights violations.

The proceedings involved statements communicated through websites, publications and other media.

Legal issue:

Whether the publication of allegedly false statements about a commercial company attracted criminal liability.

Judicial significance:

The first-instance court found Andy Hall guilty in the relevant proceedings. The subsequent appellate decision, discussed in Case 5, reversed the outcome and acquitted him.

The procedural history is important because the initial judgment should not be represented as the final disposition of the appellate proceedings.

Principles relevant to platform governance:

Commercial reputation can be affected by digital information.

Online publication can create legal disputes.

The truth and evidentiary foundation of allegations matter.

Platform content policies should respect lawful public-interest expression.

Judicial review is essential when balancing reputational protection and freedom of expression.

Importance: This litigation provides an important example of the legal risks surrounding commercial information published through digital communication systems.

5. Civil liability of commercial platform operators

Thai civil law does not impose identical liability on every platform. Liability depends on the platform's contractual role, degree of control, statutory obligations and contribution to the damage.

5.1 Contractual liability

A platform may incur contractual liability when it fails to perform obligations undertaken in its terms of service or in a particular transaction.

Examples:

Failure to transfer collected payments.

Failure to process promised refunds.

Failure to provide contracted advertising services.

Improper termination of commercial accounts.

Failure to provide agreed technical services.

The principal legal provisions include CCC Sections 150, 171 and 368, together with applicable provisions concerning contractual performance and damages.

5.2 Tortious liability

Under CCC Section 420, a platform may be liable where its own wilful or negligent conduct unlawfully causes damage.

Examples include:

Negligent cybersecurity arrangements.

Failure to protect platform infrastructure.

Unlawful disclosure of confidential information.

Negligent handling of payment transactions.

Improper publication of damaging information.

The claimant must establish the necessary elements of liability, including wrongful conduct, damage and causation.

5.3 Consumer-related liability

Where a platform acts as a seller, direct marketer or otherwise assumes legally recognised commercial obligations, it may have direct responsibilities towards consumers.

Relevant legislation includes:

Consumer Protection Act.

Direct Sales and Direct Marketing Act.

Consumer Case Procedure Act.

Civil and Commercial Code.

The 4459/2565 judgment is especially important for understanding this issue.

5.4 Data-protection liability

A platform acting as a data controller or processor may incur statutory responsibilities under the PDPA.

Potential consequences include:

Compensation for damage.

Regulatory penalties.

Corrective measures.

Administrative enforcement.

Civil proceedings.

5.5 Competition-related liability

A platform with substantial market power may face scrutiny for conduct that unlawfully restricts competition.

Examples include discriminatory seller treatment, exclusionary arrangements and unjustified restrictions on commercial partners.

The Trade Competition Act provides the relevant statutory framework.

6. Institutional governance and regulatory authorities

Thailand uses a multi-agency regulatory structure.

The allocation of responsibility depends on the nature of the platform and the particular activity involved.

For example, a payment platform may fall within financial-sector supervision in addition to applicable electronic-transaction and data-protection requirements.

7. Commercial platform governance models in Thailand

Thailand's legal framework can be understood through the following governance models.

Model 1. Regulatory compliance governance

Real-Time Compliance Monitoring: Turning Reactive Audits Into Proactive Assurance

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This model focuses on compliance with statutory requirements.

Its components include:

Regulatory notifications.

Business registration where applicable.

Compliance monitoring.

Internal legal audits.

Regulatory reporting.

Record preservation.

Legal foundation: Electronic Transactions Act and Digital Platform Services Royal Decree.

Model 2. Consumer-centred governance

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This model prioritises the rights of consumers.

Its essential components are:

Clear seller identification.

Accurate product descriptions.

Transparent pricing.

Fair refund procedures.

Effective complaint handling.

Appropriate compensation mechanisms.

Legal foundation: Consumer Protection Act and Direct Sales and Direct Marketing Act.

Model 3. Contractual governance

This model regulates relationships between the platform and its commercial participants.

Its essential features include:

Clearly defined contractual responsibilities.

Fair payment terms.

Transparent commission structures.

Reasonable termination procedures.

Contract modification procedures.

Dispute-resolution mechanisms.

Legal foundation: CCC Sections 150, 171 and 368.

Model 4. Data-governance model

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This model governs personal and commercial information processed by digital platforms.

Its components include:

Data minimisation.

Appropriate consent mechanisms.

Lawful processing.

Access controls.

Security safeguards.

Breach-response procedures.

Data-subject rights.

Legal foundation: Personal Data Protection Act B.E. 2562.

Model 5. Competition-oriented governance

This model seeks to ensure that digital platforms do not use their commercial power to unfairly disadvantage competitors or business partners.

It covers:

Algorithmic neutrality.

Fair seller rankings.

Non-discriminatory access.

Transparent commissions.

Restrictions on exclusionary conduct.

Fair treatment of affiliated and independent sellers.

Legal foundation: Trade Competition Act B.E. 2560 and the 2026 e-commerce guidelines.

Model 6. Algorithmic accountability governance

This model addresses the increasing use of automated decision-making.

It should include:

Human review of important decisions.

Documented algorithmic policies.

Appropriate audit procedures.

Explainable commercial decisions.

Monitoring for discriminatory outcomes.

Effective appeal procedures.

Thailand does not yet have a single comprehensive statute creating all these algorithmic governance obligations for commercial platforms. They must be developed through applicable existing laws, regulatory requirements and contractual arrangements.

8. Major legal challenges

9. Important legal principles emerging from the case laws

The judicial decisions discussed above demonstrate several important principles:

1. Substance over form: A platform's actual commercial activities determine its legal classification, rather than merely its contractual description. This is particularly evident in Supreme Court Decision No. 4459/2565.

2. Intermediary accountability: Platform operators must consider their own statutory responsibilities when managing third-party information.

3. Consumer protection: E-commerce businesses may be subject to direct-marketing and consumer-protection requirements.

4. Digital reputation: Online publications can create legal consequences where they unlawfully damage individual or corporate reputation.

5. Privacy protection: Unlawful digital dissemination can result in serious legal consequences.

6. Contractual fairness: Commercial platforms must consider good-faith principles when administering contractual relationships.

7. Freedom of expression: Platform moderation and commercial reputation protection must be balanced against lawful public-interest communication.

These principles are supported by the platform decision, online-content cases and commercial defamation litigation discussed above.

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10. Recommendations for strengthening Thailand's platform governance framework

Thailand could improve its commercial platform governance framework through the following reforms.

1. Specific platform liability legislation: Clarify when an intermediary becomes responsible for the conduct of sellers or other participants.

2. Seller identification requirements: Strengthen mechanisms for identifying commercial sellers and disclosing their relevant information.

3. Standardised complaint procedures: Establish effective complaint-handling and dispute-resolution mechanisms.

4. Algorithmic transparency: Require appropriate disclosure and accountability for important commercial ranking and pricing decisions.

5. Fair contractual arrangements: Strengthen protections against arbitrary account suspension and unreasonable unilateral contractual changes.

6. Cross-border enforcement: Improve cooperation with foreign regulators concerning international platform transactions.

7. Consumer compensation: Strengthen practical mechanisms for refunds and compensation when consumers suffer losses.

8. Data protection: Improve cybersecurity, privacy protection and accountability for personal-data processing.

9. Competition enforcement: Ensure that large platforms do not unfairly disadvantage smaller sellers or competing service providers.

10. Judicial specialisation: Continue developing effective procedures for resolving complex online commercial disputes.

11. Conclusion

Commercial platform governance in Thailand represents an evolving area of civil, commercial and regulatory law.

The framework combines the Civil and Commercial Code, Electronic Transactions Act, Digital Platform Services Royal Decree, Consumer Protection Act, Personal Data Protection Act and Trade Competition Act.

Supreme Court Decision No. 4459/2565 is particularly important because it demonstrates that an e-commerce operator may fall within the legal definition of a regulated direct-marketing business based on the substance of its activities.

The Chiranuch Premchaiporn litigation and the Natural Fruit litigation also illustrate the legal implications of managing online information, commercial reputation and third-party content.

However, the six judicial decisions discussed above represent six court decisions across five principal litigation matters, rather than six independent Supreme Court precedents establishing a comprehensive platform-governance doctrine. Some are criminal or appellate decisions and are relevant by analogy.

Ultimately, an effective Thai commercial platform governance system must balance five objectives: commercial freedom, consumer protection, contractual fairness, data security and competitive market integrity.

The central principle is that technological intermediation should not automatically exempt a business from legal responsibility for its own commercial conduct.

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This explanation concerns Thai domestic law and judicial authorities. No external URLs have been reproduced. The case-law discussion distinguishes direct platform authority from analogous digital-publication and commercial-reputation decisions.