The terms overlap in everyday use but the buyer, the procurement vehicle, and the compliance frame are different.
Government digital marketing covers core executive-branch work: ministries, ministerial offices, government agencies, and elected representatives. The procurement vehicles are panel-based (GovTech Bulk Tender in Singapore, BuyICT Marketing Services Panel in Australia, GSA AIMS Schedule 541 in the United States, AOR Standing Offer or CanadaBuys in Canada, MyProcurement in Malaysia). Compliance is anchored on plain-language, non-partisanship, election-period rules, and FOIA / ATIP / Right-to-Information record review.
Public sector digital marketing covers the wider entity stack outside core government: statutory boards, government-linked companies, public universities, public healthcare systems, transport authorities, and public utilities. Procurement is usually entity-led (each board or GLC runs its own panel or RFP), and compliance leans on sector-specific frames (IM8, ISM, GSA SCIP, GITN, PDPA, APP) rather than partisan-content rules.
We run both. See the public sector marketing services page for the full statutory-board, GLC, and public-utility entity context.