How Match Types can be used with various Marketing Tactics?

In SEM, match types can be used very tactical for SEM campaigns -

Broad Match Types  - Useful for Product Launches, New campaigns kick off, running SEM campaigns in new market where Brand Visibility is low.

Modified Broad Match - One level up in filtering the traffic to the site - Useful for driving consideration campaigns, Lead generation, for an existing brand that has a presence etc.

Phrase Match - Another level of filtering the traffic - Useful in campaigns that's driving lead generation, sales or wants to drive the most relevant to the site

Exact match - Last leg of filtering the traffic - Useful for driving sales and most efficient campaigns. Keywords with Exact match Types generate low CPC and high CTR and low CPA

Hope you have some idea of how match types can help in your campaigns!