Microsoft's going after the low-end market with devices like the Lumia 610 and its brethren. The handset's biggest limitation is that it only packs 256MB RAM and Redmond spent last week imploring developers to slim down their apps or face ghettoization. Now the company's revealing what else will be missing from Tango's cheapie iteration: Video podcasts, Bing local scout, fast app switching, automatic photo uploading, HD video playback (with certain codecs) and background agents will all be disabled. On the upside, this efficiency drive should ensure Windows Phone's apps remain as lithe and responsive as its interface is. Developers interested in learning more can head down to our source link for a dash of nitty and a spoonful of gritty.
Update: To clarify, the fast app switching situation is a little more nuanced: apps which uses upwards of 90MB will be "tombstoned" on deactivation, but those occupying less memory should fast resume just fine.