Embraer 145 ops:
Climb - company limit max 200 kts up to MSA then generally max 250kts to 10,000ft but Embraer speed limit rises from 250kts at 8000ft to 320kts at 10,000ft
Decent - Mach 0.76 from highlevel, then 300kts company limit down to 10,000ft. 240kts typical until about 12 miles from landing or slower if ATC request. Some airfields always expect max 220kts when on localiser.
Further company limit is 200kts below 2000ft Rad alt (about 6 miles from touchdown) during approach. Typically reduce to160kts by about 5 miles then at 4 miles slow down to approach speed which is normally about 130kts and achieved at just over 3 miles from touchdown which coincides with a company requirement to be stabilised at 1000ft.
Different people and companies seem to do it differently but they are all basically the same.