More efficient use of water than sprinklers or even soaker hoses because you can put water right at a plant's root zone where it can be more readily absorbed by the plant.
Better for plants than pop up sprayer irrigation systems (for vegetables anyway....grass will still need sprayers) because the water is placed right at the soil level where it can soak into the root zone. Spraying water directly on edible plant foliage, in addition to being wasteful because it may not reach the plant's main root system, can cause a range of problems including disease, rot and mildew.
1/2" drip tubing irrigation parts are available at Lowe's & Home Depot, and are easy to assemble. No tools are required...drip line can be cut with a simple pair of scissors, the connector pieces twist on by hand ( with a little effort) , and easily connect by hand to a timer.
Simple irrigation systems can be controlled by a battery powered timer placed at a spigot.
The emitters are designed not to clog, so the drip line can be buried, or sit on, or just below the surface of the soil.