Go-Jek, the Indonesia-based ride-sharing company valued at $5 billion, has begun its ambitious plan to increase its rivalry with Grab by expanding into three new markets after it opened shop in Vietnam.

The service — which is known as Go-Viet — covers an initial 12 districts in Ho Chi Minh City with a motorbike on-demand service. Rival Grab is in five cities in Vietnam and its services include motorbikes, taxis, private cars and food delivery.

The August 1 Vietnam launch as TechCrunch reported in June. The plan is to then expand into Thailand in September, and the Philippines before the end of this year. Singapore remains a market that Go-Jek would like to enter — it has held partnership talks with taxi operator ComfortDelGro — but it remains unclear whether, and when, that might happen.

Go-Jek expansion plan will put some heat on Grab, which has occupied a near-dominant position across Southeast Asia since it acquired Uber’s local business back in March.

Unlike Grab, though, Go-Jek is taking a very local approach to each market. Not only will it use a local name in each country — in Thailand it will be called “Get” — it has hired local ‘founder’ teams who will be responsible for service offerings and other local business aspects. It isn’t clear how closely they will work with the core Go-Jek team in Indonesia.

That may mean anyone traveling between countries will need to download local Go-Jek apps, which is in contrast to Grab, which offers a single app for eight countries in Southeast Asia.

Valued at $10 billion, Grab has raised over $5 billion from investors, including its most recent $1 billion investment from Toyota. Go-Jek has pulled in just over $2 billion. Tencent, Google, Meituan and others participated in its most recent (estimated) $1.4 billion raise which closed earlier this year.