TiTiler (dynamic tile server)

An open-source tile server (Python/FastAPI, by Development Seed) that reads Cloud-Optimized GeoTIFFs straight from cloud storage and renders web-map tiles on the fly — so a browser can pan and zoom across a huge raster without it being pre-rendered.

Why it matters

Showing a multi-gigabyte satellite scene on a slippy map used to mean pre-generating millions of tile images. TiTiler skips that: it reads only the bytes for the tiles in view (the same trick that makes COGs fast) and colors them per request, so new data is visible the moment it’s published.

Where you’ll meet it

• VEDA’s TiTiler renders its dashboard maps directly from COGs in the data store.
• It applies the colormap, rescaling, and band math at request time — change the stretch and the map updates without re-processing.
• It pairs with a STAC API: STAC says which asset, TiTiler renders it.
• Microsoft Planetary Computer and many cloud-EO portals use TiTiler-style dynamic tiling under the hood.

In plain terms

Like printing only the one page of a giant map you’re looking at, in the colors you asked for — instead of printing the whole atlas in advance.