Two tiers, not a ranked list
Most regional ecommerce entry plans treat Southeast Asia’s six major markets as a single ranked list, ordered by GMV size or growth rate. That framing produces a plan that looks logical on a slide and performs poorly in execution. A more useful frame splits the region into two tiers, each governed by different strategic logic.
Tier one: the base market
Singapore sits outside the ranked entry list entirely. It functions as the base market, not an entry market to be sequenced against the others. Singapore carries the highest online spend per shopper in the region, above USD 1,300 annually. It functions as the regional headquarters where most brand and marketing decisions for SEA actually get made. New platform features, retail media tools and measurement infrastructure typically reach Singapore first, ahead of a regional rollout. A Singapore operation that is not running well has no reference point to calibrate the rest of the regional strategy against.
Tier two: ranked by accessibility, not by size
The remaining five markets should be ranked by how accessible their growth actually is to execute against, not by how large the opportunity looks on a market size chart.
Vietnam and Thailand are the clearest entry signals right now. Vietnam has consolidated to two platforms controlling 97% of ecommerce GMV, producing the most legible platform playbook in the region: a brand knows exactly where to concentrate budget with no ambiguity. Thailand’s live commerce model is comparatively mature and category fit is already proven across several product types. Both markets reward a brand that commits to a focused brief and executes with conviction rather than spreading budget thin while testing.
Malaysia is high growth with specific execution requirements. The market posted 47.6% ecommerce growth in 2025, the second fastest rate in the region behind Thailand’s 51.8%. Halal certification timelines are consistently underestimated by entering brands relative to their go-live date. The platform landscape has also shifted meaningfully since TikTok Shop’s re-entry and continued growth in the market. A plan written against Malaysia’s market structure from even a year ago is likely working from outdated assumptions.
Indonesia is the largest market and the lowest accessibility-to-growth ratio of the five. The opportunity is real in absolute terms, Indonesia carries the region’s largest total GMV, but Jakarta and the rest of the country function as separate execution problems given how concentrated fulfillment infrastructure remains around the capital. A brief adapted from another market’s playbook consistently underperforms here. Indonesia needs a brief built for its own structure.
The Philippines carries one of the highest purchase frequencies in the region, with Shopee buyers reportedly placing around 11 orders per person annually. That frequency requires a different SKU and logistics architecture than a lower-frequency market, since the delivery and fulfillment economics of frequent, smaller orders behave differently than a market built around fewer, larger transactions. Most entry plans skip this step and apply a SKU strategy built for a different market’s order pattern.
Why sequence matters more than selection
The order markets get entered in matters as much as which markets get selected. A brand that enters three or four markets simultaneously without a proven base struggles to diagnose which market’s underperformance is a market problem versus an execution problem, since every variable is changing at once.
The conditional recommendation
Enter Singapore first, treated as the base and proof point rather than as a growth target measured on the same scale as the others. Add one tier-two priority market second, chosen by matching the brand’s actual constraints, category fit for Thailand’s live commerce maturity, a legible two-platform structure for Vietnam, high growth tolerance and halal-certification lead time for Malaysia, against each market’s specific execution requirement rather than against its headline GMV size. Prove the operating model in that second market before adding a third. A regional plan that opens in three or more markets simultaneously without this sequence typically cannot tell, six months in, which market failure was a market problem and which was an execution problem.
Research Ledger (5 claims)
| Entity | Claim | Source | Status |
|---|---|---|---|
| Singapore | Highest online spend per shopper in SEA, above USD 1,300 annually | whitebox.sg Singapore ecommerce statistics, cross-referenced against multiple SEA spend-per-shopper summaries | VERIFIED |
| Vietnam | Consolidated to two platforms, Shopee and TikTok Shop, controlling 97% of ecommerce GMV | Metric data via theinvestor.vn | VERIFIED |
| Malaysia | Posted 47.6% ecommerce growth in 2025, second fastest in SEA behind Thailand’s 51.8% | Momentum Works “Ecommerce in Southeast Asia 2026” report summary, thelowdown.momentum.asia | VERIFIED |
| Philippines | Shopee buyers reportedly place an average of around 11 orders per person annually, among the highest purchase frequencies in SEA | cube.asia Philippines ecommerce market analysis | INFERRED (figure is specific to Shopee’s buyer base rather than the full Philippines market, presented with that scope noted) |
| Indonesia | Largest ecommerce market in the region by total GMV, with infrastructure and fulfillment capacity concentrated around Jakarta relative to national population spread | Momentum Works and Magpie IQ Indonesia ecommerce analyses | VERIFIED (directionally, standard finding across regional ecommerce infrastructure reporting) |