Company (Emerson) layoffs globaly

My company, Emerson, has decided to layoff all but 80 or so IT staff world wide and hire Infosys as a replacement field IT support staff for all sites. We are going to see a flood of people looking for jobs soon. Are indeed and LinkedIn the best places to look for jobs in the IT field? It's been a long time since I had to job hunt. We have about three months before the layoffs kick in so I have time.