the creation of a logo, or in fact, a brand, is the most complicated part of the design work. it is the creation of the essence of a company, a product, a service. to capture its nature ad idea into a small but crucial component, that needs to say it all.
A website is like a house, providing a virtual space to present your own. as so, it needs to reflect the feel your marketing is aiming for, serve your perpuse, offer information or the opportunity for your client to buy your products.
Ads, invitations, every company, every business, needs to tell the world its out there. whether it's printed or using virtual technologies, it must be sent in order to tell your potential clients you are there.