You will see some tangible results within days, but typically it takes between 1 to 3 months to see a positive return on investment. For example, your homepage might be indexed by Google and/or Yahoo within days. However, it typically takes 4 to 8 weeks to have your interior pages indexed.

Achieving a favorable ranking in the major search engines is a gradual process. We must consider several factors when determining the timetable for achieving a favorable rank.

What keywords or key phrases will be targeted?

How competitive are those keywords and key phrases?

These factors, along with others, determine the size and scope of a search engine optimization campaign.