Tech

To build tech buildings or research new technologies or upgrades, in order to build more advanced units and exercise later game strategies. Most units and abilities are not available at the beginning of the game, and players must tech to take advantage of them. But tech requires a resource commitment, which can the player from the other main strategic choices (expanding or attacking).

Teching pushes the game through it's early, mid, and late stages. In many racial matchups players will play very defensively and tech in order to push the game to a stage where their race has the advantage.