Comments from the reviewer with my replies are below:

Thanks for the proceedings, interesting and easy to read. Just a few comments below, maybe worth considering. In particular, the references are mis-leading (not in the right order) and the experiment part might be revised: the balance between the all 4 experiments is puzzling.
Cheers.
- page 1: country of author 11 missing in his affiliation
Done, added Finland.

- page 2: \"In order to provide an incentive for sites to move it was\",        add a coma after \"move\”
Done.

- page 2: \"in order for for IPv6-only...\", remove one \"for\”
Done.

- page 3: add a space right before \"[2]\”
Done.

- page 4: reference [5] comes up right after reference [2]... please fix the order of the references
Done (Needed to change order of references in reference section).

- page 4: add a space right before \"[6]\”
Done.

- page 4: \"All Tiers 1s\" should be \"All Tiers-1s\" for consistency
Done.

- page 5, Figure 1:  could the figure be made bigger ?        The caption should finish with a full stop (period).
Caption has been corrected.  Difficult to make the figure bigger without splitting it and then it takes up whole page and takes us over limit.  Best to leave it as is.

- page 5:  references \"[8,7]\" are not in the right order        and a space should come before the \"[\”
Done.

- page 6: reference [3] : not in right order why is there a reference for ATLAS and not for ALICE ?
Done.  Reference added for Alien.

- page 6: \"PanDA\" or \"Panda\", check for consistency
Done.

- page 7: DIRAC, add a reference ?
Done.

- page 7: Tier-2D should be defined for LHCb- experiments: the balance between the 4 experiements is not good ; one has the feeling  there is not as much information about ALICE and ATLAS, comparedto CMS and LHCb ; is there really a difference ?
Removed D from Tier-2D.  I have modified the text slightly.  The ALICE and ATLAS use cases are simpler.

- page 8: \"(ii) EGI acknowledges...\", this is strange to me, EGI is in the acknowledgement part, should be rephrased like (i), meaning by defining EGi first.
Didn’t really know how to change this.