Here's some useful info:
ABA Position statement on safe sleeping
Pamphlet

Note that co-sleeping means sleeping in the same room, but on a different sleeping surface. Bed-sharing means sleeping together on the same surface.
Co-sleeping is recommended for at least the first 12 months to reduce the risk of SIDS.
Bed sharing can also be very safe - as long as you are aware of specific risk factors - and helps mums get more rest and supports the breastfeeding relationship. It is not safe to sleep together on a couch/sofa, nor if you are under the influence of medications that may make you extra drowsy, for example. It is also not recommended to bed share if you are formula feeding or a smoker.

Side-caring a cot to your bed gives you the advantages of having baby very close to you, but is still technically co-sleeping, rather than bed sharing. A lot of parents end up bed sharing, even when they say they never would. It's great to be thinking about it beforehand, however, as unfortunately some parents may end up doing things unsafely without realising it.