Whole SEO world is having this threat that SEO is dying. Thing is that SEO has grown up now to some advanced level; so only who have the sound indepth overall knowledge of SEM would only survive. SEO will never die. It will be getting better day by day. Google has just fixed their loopholes which was pending for so long years giving threat that SEO is dying. All the basics in SEO are still the the same. Excessive of everything results worst. So few activities that you can opt in 2015 for better SERP are given below -
1. Drop Classic Old Keyword Research technique as that is no-more beneficial, so better adapt new one. Sync keywords, synonyms and relate them so Google will pick best one out from your web-content when some one searches for same.
2. Create web-pages accordingly and indent should be not only having unique as everybody is writing unique contents these days but use synonyms, or user generated terms in web-content (for this proper keyword analysis is done)
3. Create Brand First and Google shows signs of giving value to Brand.
4. Create Quality Links by building relationship and not only by posting links here and their as Relationship counts everywhere.
5. Do PR`s regularly, create news for publishers to kick your website, helps in building brand as Brand is a signal in Google Algorithm.